Joy and Play in Jewish Tradition

אמר רב יהודה בריה דרב שמואל בר שילת משמיה דרב בקשו חכמים לגנוז ספר קהלת מפני שדבריו סותרין זה את זה ומפני מה לא גנזוהו מפני שתחילתו דברי תורה וסופו דברי תורה תחילתו דברי תורה דכתיב (קהלת א, ג) מה יתרון לאדם בכל עמלו שיעמול תחת השמש ואמרי דבי ר' ינאי תחת השמש הוא דאין לו קודם שמש יש לו סופו דברי תורה דכתיב (קהלת יב, יג) סוף דבר הכל נשמע את האלהים ירא ואת מצותיו שמור כי זה כל האדם מאי כי זה כל האדם אמר רבי (אליעזר) כל העולם כולו לא נברא אלא בשביל זה ר' אבא בר כהנא אמר שקול זה כנגד כל העולם כולו שמעון בן עזאי אומר ואמרי לה שמעון בן זומא אומר לא נברא כל העולם כולו אלא לצוות לזה ומאי דבריו סותרין זה את זה כתיב (קהלת ז, ג) טוב כעס משחוק וכתיב (קהלת ב, ב) לשחוק אמרתי מהלל כתיב (קהלת ח, טו) ושבחתי אני את השמחה וכתיב (קהלת ב, ב) ולשמחה מה זה עושה לא קשיא טוב כעס משחוק טוב כעס שכועס הקב"ה על הצדיקים בעוה"ז משחוק שמשחק הקב"ה על הרשעים בעולם הזה ולשחוק אמרתי מהלל זה שחוק שמשחק הקב"ה עם הצדיקים בעולם הבא ושבחתי אני את השמחה שמחה של מצוה ולשמחה מה זה עושה זו שמחה שאינה של מצוה ללמדך שאין שכינה שורה לא מתוך עצבות ולא מתוך עצלות ולא מתוך שחוק ולא מתוך קלות ראש ולא מתוך שיחה ולא מתוך דברים בטלים אלא מתוך דבר שמחה של מצוה שנאמר (מלכים ב ג, טו) ועתה קחו לי מנגן והיה כנגן המנגן ותהי עליו יד ה' אמר רב יהודה וכן לדבר הלכה אמר רבא וכן לחלום טוב איני והאמר רב גידל אמר רב כל תלמיד חכם שיושב לפני רבו ואין שפתותיו נוטפות מר תכוינה שנאמר (שיר השירים ה, יג) שפתותיו שושנים נוטפות מור עובר אל תקרי מור עובר אלא מר עובר אל תקרי שושנים אלא ששונים לא קשיא הא ברבה והא בתלמיד ואיבעית אימא הא והא ברבה ולא קשיא הא מקמי דלפתח הא לבתר דפתח כי הא דרבה מקמי דפתח להו לרבנן אמר מילתא דבדיחותא ובדחי רבנן לסוף יתיב באימתא ופתח בשמעתא

Shabbat 30b:3-6

Since contradictions in Ecclesiastes were mentioned, the Gemara cites additional relevant sources. Rav Yehuda, son of Rav Shmuel bar Sheilat, said in the name of Rav: The Sages sought to suppress the book of Ecclesiastes and declare it apocryphal because its statements contradict each other and it is liable to confuse its readers. And why did they not suppress it? Because its beginning consists of matters of Torah and its end consists of matters of Torah. The ostensibly contradictory details are secondary to the essence of the book, which is Torah. The Gemara elaborates: Its beginning consists of matters of Torah, as it is written: “What profit has man of all his labor which he labors under the sun?” (Ecclesiastes 1:3), and the Sages of the school of Rabbi Yannai said: By inference: Under the sun is where man has no profit from his labor; however, before the sun, i.e., when engaged in the study of Torah, which preceded the sun, he does have profit. Its ending consists of matters of Torah, as it is written: “The end of the matter, all having been heard: Fear God, and keep His mitzvot; for this is the whole man” (Ecclesiastes 12:13). With regard to this verse, the Gemara asks: What is the meaning of the phrase: For this is the whole man? Rabbi Eliezer said: The entire world was only created for this person. Rabbi Abba bar Kahana said: This person is equivalent to the entire world. Shimon ben Azzai says and some say that Shimon ben Zoma says: The entire world was only created as companion to this man, so that he will not be alone. And to the essence of the matter, the Gemara asks: What is the meaning of: Its statements that contradict each other? It is written: “Vexation is better than laughter” (Ecclesiastes 7:3), and it is written: “I said of laughter: It is praiseworthy” (Ecclesiastes 2:2), which is understood to mean that laughter is commendable. Likewise in one verse it is written: “So I commended mirth” (Ecclesiastes 8:15), and in another verse it is written: “And of mirth: What does it accomplish?” (Ecclesiastes 2:2). The Gemara answers: This is not difficult, as the contradiction can be resolved. Vexation is better than laughter means: The vexation of the Holy One, Blessed be He, toward the righteous in this world is preferable to the laughter which the Holy One, Blessed be He, laughs with the wicked in this world by showering them with goodness. I said of laughter: It is praiseworthy, that is the laughter which the Holy One, Blessed be He, laughs with the righteous in the World-to-Come. Similarly, “So I commended mirth,” that is the joy of a mitzva. “And of mirth: What does it accomplish?” that is joy that is not the joy of a mitzva. The praise of joy mentioned here is to teach you that the Divine Presence rests upon an individual neither from an atmosphere of sadness, nor from an atmosphere of laziness, nor from an atmosphere of laughter, nor from an atmosphere of frivolity, nor from an atmosphere of idle conversation, nor from an atmosphere of idle chatter, but rather from an atmosphere imbued with the joy of a mitzva. As it was stated with regard to Elisha that after he became angry at the king of Israel, his prophetic spirit left him until he requested: “But now bring me a minstrel; and it came to pass, when the minstrel played, that the hand of the Lord came upon him” (II Kings 3:15). Rav Yehuda said: And, so too, one should be joyful before stating a matter of halakha. Rava said: And, so too, one should be joyful before going to sleep in order to have a good dream. The Gemara asks: Is that so, that one should introduce matters of halakha joyfully? Didn’t Rav Giddel say that Rav said: Any Torah scholar who sits before his teacher and his lips are not dripping with myrrh due to fear of his teacher, those lips shall be burnt, as it is stated: “His lips are as lilies, dripping with flowing myrrh [shoshanim notefot mor over]” (Song of Songs 5:13)? He interpreted homiletically: Do not read mor over, flowing myrrh; rather, read mar over, flowing bitterness. Likewise, do not read shoshanim, lilies; rather, read sheshonim, that are studying, meaning that lips that are studying Torah must be full of bitterness. The Gemara explains: This is not difficult, there is no contradiction here, as this, where it was taught that one should introduce matters of halakha joyfully, is referring to a rabbi, and that, where it was taught that one must be filled with bitterness, is referring to a student, who must listen to his teacher with trepidation. And if you wish, say instead that this and that are referring to a rabbi, and it is not difficult. This, where it was taught that he must be joyful, is before he begins teaching, whereas that, where it was taught that he must be filled with bitterness and trepidation, is after he already began teaching halakha. That explanation is like that which Rabba did. Before he began teaching halakha to the Sages, he would say something humorous and the Sages would be cheered. Ultimately, he sat in trepidation and began teaching the halakha.

פסחים ק״ט א:א׳-ז׳

קליות ואגוזין בערב פסח כדי שלא ישנו וישאלו אמרו עליו על רבי עקיבא שהיה מחלק קליות ואגוזין לתינוקות בערב פסח כדי שלא ישנו וישאלו תניא רבי אליעזר אומר חוטפין מצות בלילי פסחים בשביל תינוקות שלא ישנו תניא אמרו עליו על ר' עקיבא מימיו לא אמר הגיע עת לעמוד בבהמ"ד חוץ מערבי פסחים וערב יום הכפורים בע"פ בשביל תינוקות כדי שלא ישנו וערב יוה"כ כדי שיאכילו את בניהם ת"ר חייב אדם לשמח בניו ובני ביתו ברגל שנא' (דברים טז, יד) ושמחת בחגך במה משמחם ביין רבי יהודה אומר אנשים בראוי להם ונשים בראוי להן אנשים בראוי להם ביין ונשים במאי תני רב יוסף בבבל בבגדי צבעונין בארץ ישראל בבגדי פשתן מגוהצין תניא רבי יהודה בן בתירא אומר בזמן שבית המקדש קיים אין שמחה אלא בבשר שנאמר (דברים כז, ז) וזבחת שלמים ואכלת שם ושמחת לפני ה' אלהיך ועכשיו שאין בית המקדש קיים אין שמחה אלא ביין שנאמר (תהלים קד, טו) ויין ישמח לבב אנוש אמר רבי יצחק קסתא דמוריסא דהוה בציפורי היא הות כמין לוגא דמקדשא ובה משערין רביעית של פסח אמר רבי יוחנן תמנייתא קדמייתא דהוה בטבריא הות יתירה על דא ריבעא ובה משערין רביעית של פסח א"ר חסדא רביעית של תורה אצבעים על אצבעים ברום אצבעים וחצי אצבע וחומש אצבע כדתניא (ויקרא טו, טז) ורחץ במים את כל בשרו שלא יהא דבר חוצץ בין בשרו למים במים במי מקוה את כל בשרו מים שכל גופו עולה בהן וכמה הן

Pesachim 109a:1-7

roasted grains and nuts on Passover eve, so that they will not sleep and also so they will ask the four questions at night. They said about Rabbi Akiva that he would distribute roasted grains and nuts to children on Passover eve, so that they would not sleep and so they would ask. It was taught in a baraita that Rabbi Eliezer says: One grabs the matzot on the nights of Passover. One should eat them very quickly on account of the children, so that, due to the hasty consumption of the meal, they will not sleep and they will inquire into the meaning of this unusual practice. It was taught in a baraita: They said about Rabbi Akiva that in all his days he never said to his students that the time had come to arise from their learning in the study hall. Instead, he would continue to teach as long as they were willing to listen. This was true except for the eves of Passover and the eve of Yom Kippur, when he would stop teaching. The Gemara explains the reasons for these exceptions: On the eve of Passover, he would stop on account of the children, so that they would go to sleep during the day, so that they would not be tired and sleep at night. And on the eve of Yom Kippur, he would stop so that his students would remember to feed their children. The Sages taught: A man is obligated to gladden his children and the members of his household on a Festival, as it is stated: “And you shall rejoice on your Festival, you, and your son, and your daughter, and your manservant, and your maidservant, and the Levite, and the stranger, and the fatherless, and the widow that are within your gates” (Deuteronomy 16:14). With what should one make them rejoice? With wine. Rabbi Yehuda says: One should enable each member of his household to rejoice with an item that pleases them, men with what is fit for them and women with what is fit for them. Rabbi Yehuda elaborates: Men with what is fit for them, i.e., with wine. And as for the women, with what should one cause them to rejoice? Rav Yosef teaches: One should delight them with new clothes, in Babylonia with colored clothes and in Eretz Yisrael with the pressed linen clothes that are manufactured there. It was taught in a baraita that Rabbi Yehuda ben Beteira says: When the Temple is standing, rejoicing is only through the eating of sacrificial meat, as it is stated: “And you shall sacrifice peace-offerings and you shall eat there and you shall rejoice before the Lord your God” (Deuteronomy 27:7). And now that the Temple is not standing and one cannot eat sacrificial meat, he can fulfill the mitzva of rejoicing on a Festival only by drinking wine, as it is stated: “And wine that gladdens the heart of man” (Psalms 104:15). Rabbi Yitzḥak said: The vessel used for measuring brine [moraysa] that was in Tzippori was the same volume as the log in the Temple, and with it the Sages would measure the quarter-log of Passover. They would fill this vessel and then divide the liquid it contained into four equal parts. The result was one quarter-log, which is the minimum measure of wine for the four cups on Passover and for certain other halakhot. Rabbi Yoḥanan said: The old eighth measure that was in use in Tiberias was greater than this eighth measure by one quarter-log, and with it we measure the quarter-log of Passover. When the old measure is filled and poured into the newer version, the amount left in the original vessel is one quarter-log. Rav Ḥisda said: The quarter-log measurement of the Torah is two fingerbreadths by two fingerbreadths in volume, by the height of two fingerbreadths and one half fingerbreadth and one-fifth of a fingerbreadth. This statement is as it was taught in a baraita concerning a ritual bath, about which the verse states: “And he shall bathe all his flesh in the water” (Leviticus 15:16), from which the Sages expounded: This phrase teaches that there should be nothing interposing between one’s flesh and the water. The expression “in the water” indicates that the verse is referring to a specific body of water, i.e., in the water of a ritual bath. The phrase “all his flesh” teaches that one must immerse in water that his whole body can enter at once. And how much is that?

תענית כ״ו ב:ב׳-ו׳

בתשעה באב נגזר על אבותינו שלא יכנסו לארץ וחרב הבית בראשונה ובשניה ונלכדה ביתר ונחרשה העיר משנכנס אב ממעטין בשמחה שבת שחל תשעה באב להיות בתוכה אסור מלספר ומלכבס ובחמישי מותרין מפני כבוד השבת ערב תשעה באב לא יאכל אדם שני תבשילין לא יאכל בשר ולא ישתה יין רבן שמעון בן גמליאל אומר ישנה רבי יהודה מחייב בכפיית המטה ולא הודו לו חכמים אמר רבן שמעון בן גמליאל לא היו ימים טובים לישראל כחמשה עשר באב וכיוה"כ שבהן בנות ירושלים יוצאות בכלי לבן שאולין שלא לבייש את מי שאין לו כל הכלים טעונין טבילה ובנות ירושלים יוצאות וחולות בכרמים ומה היו אומרות בחור שא נא עיניך וראה מה אתה בורר לך אל תתן עיניך בנוי תן עיניך במשפחה (משלי לא, ל) שקר החן והבל היופי אשה יראת ה' היא תתהלל ואומר (משלי לא, לא) תנו לה מפרי ידיה ויהללוה בשערים מעשיה וכן הוא אומר (שיר השירים ג, יא) צאינה וראינה בנות ציון במלך שלמה בעטרה שעטרה לו אמו ביום חתונתו וביום שמחת לבו ביום חתונתו זה מתן תורה וביום שמחת לבו זה בנין בית המקדש שיבנה במהרה בימינו:

Taanit 26b:2-6

On the Ninth of Av it was decreed upon our ancestors that they would all die in the wilderness and not enter Eretz Yisrael; and the Temple was destroyed the first time, in the days of Nebuchadnezzar, and the second time, by the Romans; and Beitar was captured; and the city of Jerusalem was plowed, as a sign that it would never be rebuilt. Not only does one fast on the Ninth of Av, but from when the month of Av begins, one decreases acts of rejoicing. During the week in which the Ninth of Av occurs, it is prohibited to cut one’s hair and to launder clothes, but if the Ninth of Av occurs on a Friday, on Thursday these actions are permitted in deference to Shabbat. On the eve of the Ninth of Av a person may not eat two cooked dishes in one meal. Furthermore, one may neither eat meat nor drink wine. Rabban Shimon ben Gamliel says: One must adjust and decrease the amount he eats. Rabbi Yehuda obligates one to overturn the bed and sleep on the floor like one in a state of mourning, but the Rabbis did not agree with him. The mishna cites a passage that concludes its discussion of the month of Av, as well as the entire tractate of Ta’anit, on a positive note. Rabban Shimon ben Gamliel said: There were no days as joyous for the Jewish people as the fifteenth of Av and as Yom Kippur, as on them the daughters of Jerusalem would go out in white clothes, which each woman borrowed from another. Why were they borrowed? They did this so as not to embarrass one who did not have her own white garments. All the garments that the women borrowed require immersion, as those who previously wore them might have been ritually impure. And the daughters of Jerusalem would go out and dance in the vineyards. And what would they say? Young man, please lift up your eyes and see what you choose for yourself for a wife. Do not set your eyes toward beauty, but set your eyes toward a good family, as the verse states: “Grace is deceitful and beauty is vain, but a woman who fears the Lord, she shall be praised” (Proverbs 31:30), and it further says: “Give her the fruit of her hands, and let her works praise her in the gates” (Proverbs 31:31). And similarly, it says in another verse: “Go forth, daughters of Zion, and gaze upon King Solomon, upon the crown with which his mother crowned him on the day of his wedding, and on the day of the gladness of his heart” (Song of Songs 3:11). This verse is explained as an allusion to special days: “On the day of his wedding”; this is the giving of the Torah through the second set of tablets on Yom Kippur. The name King Solomon in this context, which also means king of peace, is interpreted as a reference to God. “And on the day of the gladness of his heart”; this is the building of the Temple, may it be rebuilt speedily in our days.

ברכות נ״ד א:ג׳-ד׳

על הגשמים ועל בשורות טובות אומר ברוך הטוב והמטיב על בשורות רעות אומר ברוך דיין האמת בנה בית חדש וקנה כלים חדשים אומר ברוך שהחיינו וקיימנו והגיענו לזמן הזה מברך על הרעה מעין על הטובה ועל הטובה מעין על הרעה והצועק לשעבר הרי זו תפלת שוא היתה אשתו מעוברת ואומר יהי רצון שתלד אשתי זכר הרי זו תפלת שוא היה בא בדרך ושמע קול צוחה בעיר ואומר יהי רצון שלא תהא בתוך ביתי הרי זו תפלת שוא

Berakhot 54a:3-4

For rain and other good tidings, one recites the special blessing: Blessed…Who is good and Who does good. Even for bad tidings, one recites a special blessing: Blessed…the true Judge. Similarly, when one built a new house or purchased new vessels, he recites: Blessed…Who has given us life, sustained us, and brought us to this time. The mishna articulates a general principle: One recites a blessing for the bad that befalls him just as he does for the good. In other words, one recites the appropriate blessing for the trouble that he is experiencing at present despite the fact that it may conceal some positive element in the future. Similarly, one must recite a blessing for the good that befalls him just as for the bad. The mishna states: And one who cries out over the past in an attempt to change that which has already occurred, it is a vain prayer. For example, one whose wife was pregnant and he says: May it be God’s will that my wife will give birth to a male child, it is a vain prayer. Or one who was walking on the path home and he heard the sound of a scream in the city, and he says: May it be God’s will that this scream will not be from my house, it is a vain prayer. In both cases, the event already occurred.

מועד קטן י״ד ב:א׳-ט׳

ואי אמרת קטן אית ביה פלוגתא נמצאת אבילות נוהגת בקטן והתניא מקרעין לקטן מפני עגמת נפש אמר רב אשי מי קתני הא אסורין דלמא יש מהן אסור ויש מהן מותר אמימר ואי תימא רב שישא בריה דרב אידי מתני הכי אמר שמואל קטן מותר לגלחו במועד לא שנא נולד במועד ולא שנא נולד מעיקרא אמר רב פנחס אף אנן נמי תנינא כל אלו שאמרו מותר לגלח במועד מותר לגלח בימי אבלו הא אסורין לגלח במועד אסורין לגלח בימי אבלו אי אמרת קטן אסור נמצאת אבילות נוהגת בקטן ותניא מקרעין לקטן מפני עגמת נפש אמר רב אשי מי קתני הא אסורין דלמא יש מהן אסור ויש מהן מותר אבל אינו נוהג אבילותו ברגל שנאמר (דברים טז, יד) ושמחת בחגך אי אבילות דמעיקרא הוא אתי עשה דרבים ודחי עשה דיחיד ואי אבילות דהשתא הוא לא אתי עשה דיחיד ודחי עשה דרבים

Moed Katan 14b:1-9

And if you say that with regard to a baby there is a distinction between being born before the Festival and being born on it, and in some cases it is prohibited to cut the hair of a baby, then you find that mourning is practiced even with a minor. Isn’t it taught in a baraita: One rends the clothes of a minor whose relative has passed away, due to the desire to bring about feelings of grief among those who see him? However, there is no inherent requirement for the minor to observe any of the halakhot of mourning. Rav Ashi said: Is it taught explicitly in the first baraita cited by Rav Pineḥas that if it is prohibited for one to have a haircut during the Festival, it is likewise prohibited to have a haircut during the week of mourning? That was merely an inference. Perhaps there are those among them, i.e., those listed in the mishna, for whom it is prohibited, while there are others among them for whom it is permitted, and the halakhot of mourning do not apply to a baby. Ameimar, and some say it was Rav Sheisha, son of Rav Idi, taught that statement in this manner. Shmuel said: With regard to a baby, it is permitted to cut his hair during the Festival. It is no different whether he was born during the Festival, and it is no different whether he was born beforehand. Rav Pineḥas said: We, too, learn in the baraita a support for this statement: All of those about whom the Sages said: It is permitted to shave and cut his hair on the intermediate days of the Festival, it is also permitted to shave and cut his hair during the days of his mourning. But from this it follows that one who is prohibited from shaving and cutting his hair on the intermediate days of a Festival is also prohibited from shaving and cutting his hair during the days of his mourning. If you say that with regard to a baby it is prohibited to cut his hair, then you find that mourning is practiced even with a minor. And it was taught in a baraita: One rends the clothes of a minor whose relative has passed away due to the desire to bring about feelings of grief among those who see him. However, there is no inherent requirement for the minor to observe any of the halakhot of mourning. Rav Ashi said: Is it taught explicitly in the first baraita cited by Rav Pineḥas that if it is prohibited for one to shave during the Festival, it is likewise prohibited to shave during the week of mourning? That was merely an inference. Perhaps there are those among them for whom it is prohibited, while there are others among them for whom it is permitted. If so, there is no clear support from this baraita for Shmuel’s statement. § A mourner does not practice the halakhot of his mourning on a Festival, as it is stated: “And you shall rejoice in your Festival” (Deuteronomy 16:14). The Gemara explains: If it is a mourning period that had already begun at the outset of the Festival, the positive mitzva of rejoicing on the Festival, which is incumbent upon the community, comes and overrides the positive mitzva of the individual, i.e., the mourning. And if the mourning period began only now, i.e., the deceased died during the Festival, the positive mitzva of the individual does not come and override the positive mitzva of the community.

דברים כ״ח:מ״ה-מ״ז

(מה) וּבָ֨אוּ עָלֶ֜יךָ כָּל־הַקְּלָל֣וֹת הָאֵ֗לֶּה וּרְדָפ֙וּךָ֙ וְהִשִּׂיג֔וּךָ עַ֖ד הִשָּֽׁמְדָ֑ךְ כִּי־לֹ֣א שָׁמַ֗עְתָּ בְּקוֹל֙ יְהוָ֣ה אֱלֹהֶ֔יךָ לִשְׁמֹ֛ר מִצְוֺתָ֥יו וְחֻקֹּתָ֖יו אֲשֶׁ֥ר צִוָּֽךְ׃ (מו) וְהָי֣וּ בְךָ֔ לְא֖וֹת וּלְמוֹפֵ֑ת וּֽבְזַרְעֲךָ֖ עַד־עוֹלָֽם׃ (מז) תַּ֗חַת אֲשֶׁ֤ר לֹא־עָבַ֙דְתָּ֙ אֶת־יְהוָ֣ה אֱלֹהֶ֔יךָ בְּשִׂמְחָ֖ה וּבְט֣וּב לֵבָ֑ב מֵרֹ֖ב כֹּֽל׃

Deuteronomy 28:45-47

(45) All these curses shall befall you; they shall pursue you and overtake you, until you are wiped out, because you did not heed the LORD your God and keep the commandments and laws that He enjoined upon you. (46) They shall serve as signs and proofs against you and your offspring for all time. (47) Because you would not serve the LORD your God in joy and gladness over the abundance of everything,

תהילים ק׳:א׳-ה׳

(א) מִזְמ֥וֹר לְתוֹדָ֑ה הָרִ֥יעוּ לַ֝יהוָ֗ה כָּל־הָאָֽרֶץ׃ (ב) עִבְד֣וּ אֶת־יְהוָ֣ה בְּשִׂמְחָ֑ה בֹּ֥אוּ לְ֝פָנָ֗יו בִּרְנָנָֽה׃ (ג) דְּע֗וּ כִּֽי־יְהוָה֮ ה֤וּא אֱלֹ֫הִ֥ים הֽוּא־עָ֭שָׂנוּ ולא [וְל֣וֹ] אֲנַ֑חְנוּ עַ֝מּ֗וֹ וְצֹ֣אן מַרְעִיתֽוֹ׃ (ד) בֹּ֤אוּ שְׁעָרָ֨יו ׀ בְּתוֹדָ֗ה חֲצֵרֹתָ֥יו בִּתְהִלָּ֑ה הֽוֹדוּ־ל֝֗וֹ בָּרֲכ֥וּ שְׁמֽוֹ׃ (ה) כִּי־ט֣וֹב יְ֭הֹוָה לְעוֹלָ֣ם חַסְדּ֑וֹ וְעַד־דֹּ֥ר וָ֝דֹ֗ר אֱמוּנָתֽוֹ׃

Psalms 100:1-5

(1) A psalm for praise. Raise a shout for the LORD, all the earth; (2) worship the LORD in gladness; come into His presence with shouts of joy. (3) Acknowledge that the LORD is God; He made us and we are His, His people, the flock He tends. (4) Enter His gates with praise, His courts with acclamation. Praise Him! Bless His name! (5) For the LORD is good; His steadfast love is eternal; His faithfulness is for all generations.

The truth is, technically speaking there is no obligation in the Torah that we be happy. There is a verse in Psalms that states we should serve God with joy (100:2). Likewise the Torah teaches us the terrible punishments which will befall Israel for rejecting God and His Torah, and in those curses it adds, “[All of this will be] on account that you did not serve Me with happiness and goodness of the heart…” (Deut. 28:47). However, strictly speaking, those verses do not instruct us to be happy at all times, just that we serve God with happiness.

There is additionally a well-known expression (and song): “It is a great mitzvah to be happy constantly.” But this too is not a verse or a statement from a classic text. It appears in the writings of Rabbi Nachman of Breslov (Tanina 24), and though important, must be viewed as sage counsel rather than a strict obligation.

Finally, there is a verse in the Torah that we should rejoice in all the good God has granted us (Deut. 26:11) – that we be happy about our blessings. However, this too is not instructing us to be happy at all times and for everything, only for the good. In addition, the commentators do not view this as a strict obligation, one of the 613 commandments, but rather as an ideal to strive for.

Why does the Torah not command us to be happy? No doubt it is for the reason you wrote. Happiness is not in our direct control. We can strive to be happy but we cannot simply turn it on if we do not feel it. The Torah gives us realistic mitzvot alone – ones in our control to fulfill. Thus, it almost always addresses the realm of action rather than the realm of thought. We can be commanded not to eat pork but it’s impossible to command us not to be sad.

Even so, it is clear from many statements of the Sages that we should strive for happiness and cheerfulness (e.g., Talmud Sanhedrin 100b, Brachot 31a, 60b, Shabbat 30b, Ketubot 62a, Pirkei Avot 6:6). Rabbi Akiva, as well as his teacher Nachum Ish Gamzu, were known for accepting all that God granted them happily.

The reason that happiness is so integral is clear. People who are positive and excited about life will serve God with energy. They will be able to grow and to face challenges, rather than sinking into listlessness and depression. An early Hassidic Rebbe was likewise rerported to have said, “Although there is no mitzvah to be happy, happiness can bring one to the greatest of mitzvot.”

How does one acquire happiness? Ultimately it should stem from our belief in God. The stronger we believe in our hearts that God loves us and only give what is best for us, the less we will be frustrated and annoyed with how our lives are going. We will see everything in life as just right for us, and as opportunities specially crafted for us by a loving God, in order that we grow and maximize our potential.

But again, we cannot just turn on happiness. It is a skill, which as all skills must be learned and developed. We have a lot of material on how a person can acquire happiness. See here for some important links: