וַיֹּ֨אמֶר יְהֹוָ֜ה אֶל־מֹשֶׁ֗ה קַח־לְךָ֙ אֶת־יְהוֹשֻׁ֣עַ בִּן־נ֔וּן אִ֖ישׁ אֲשֶׁר־ר֣וּחַ בּ֑וֹ וְסָמַכְתָּ֥ אֶת־יָדְךָ֖ עָלָֽיו׃ וְהַֽעֲמַדְתָּ֣ אֹת֗וֹ לִפְנֵי֙ אֶלְעָזָ֣ר הַכֹּהֵ֔ן וְלִפְנֵ֖י כׇּל־הָעֵדָ֑ה וְצִוִּיתָ֥ה אֹת֖וֹ לְעֵינֵיהֶֽם׃ וְנָתַתָּ֥ה מֵהֽוֹדְךָ֖ עָלָ֑יו לְמַ֣עַן יִשְׁמְע֔וּ כׇּל־עֲדַ֖ת בְּנֵ֥י יִשְׂרָאֵֽל׃ וְלִפְנֵ֨י אֶלְעָזָ֤ר הַכֹּהֵן֙ יַעֲמֹ֔ד וְשָׁ֥אַל ל֛וֹ בְּמִשְׁפַּ֥ט הָאוּרִ֖ים לִפְנֵ֣י יְהֹוָ֑ה עַל־פִּ֨יו יֵצְא֜וּ וְעַל־פִּ֣יו יָבֹ֗אוּ ה֛וּא וְכׇל־בְּנֵי־יִשְׂרָאֵ֥ל אִתּ֖וֹ וְכׇל־הָעֵדָֽה׃
And the LORD answered Moses, “Single out Joshua son of Nun, an inspired man, and lay your hand upon him. Have him stand before Eleazar the priest and before the whole community, and commission him in their sight. Invest him with some of your authority, so that the whole Israelite community may obey. But he shall present himself to Eleazar the priest, who shall on his behalf seek the decision of the Urim before the LORD. By such instruction they shall go out and by such instruction they shall come in, he and all the Israelites, the whole community.”
Why does it point out that there is "spirit" or "inspiration" (read in Hebrew as ruach רוח) in Joshua?
Seer of Lublin (R. Yaakov Hurwitz)
God told Moses to "take a man in whom there is spirit" because only one knows his or her own spirit can have knowledge also of the spirit of others.
(Marder, Rabbi Sheldon. "Pinchas, 2001." Voices of Torah: A Treasury of Rabbinic Gleanings on the Weekly Portions, Holidays, and Special Shabbatot. Ed. Hara Person. CCAR Press: New York, 2012. Vol. 1. p. 437)
Sifrei Zuta 26
Joshua is defined as “one who walks with the hot-headed ones and with the patient ones, each according to their opinion.”
(Rieser, Rabbi Louis. "Pinchas, 2010." Voices of Torah: A Treasury of Rabbinic Gleanings on the Weekly Portions, Holidays, and Special Shabbatot. Ed. Hara Person. CCAR Press: New York, 2020. Vol. 2. p. 287)
איש אשר רוח בו. כתרגומו. ודרשו רז"ל שיוכל להלוך כנגד רוחו של כל אחד.
“a man in whom there is spirit.” A reference to Holy Spirit. Our sages in Sifri Pinchas 140 understand this to mean that he has the emotional fortitude to brave all opposition.
What does Moses "invest" Joshua with?
Rabbi Kenneth J. Weiss
In gematria, the numerical value of meihod'cha is seventy-five -- the same as for the word hasod, "the secret." While commissioning Joshua, Moses perhaps shared the secret a leader must understand: you will know reward but only much later on (Rashi); meanwhile, you will experience self-doubt, loneliness, slander, envy, and incessant criticism.
(Weiss, Rabbi Kenneth J. "Pinchas, 2002." Voices of Torah: A Treasury of Rabbinic Gleanings on the Weekly Portions, Holidays, and Special Shabbatot. Ed. Hara Person. CCAR Press: New York, 2012. Vol. 1. p. 438)
What do we learn from this about leadership and what Joshua would be experiencing?