Vayigash - So Nice, God Names Him Twice

(26) And they told him, “Joseph is still alive; yes, he is ruler over the whole land of Egypt.” His heart went numb, for he did not believe them. (27) But when they recounted all that Joseph had said to them, and when he saw the wagons that Joseph had sent to transport him, the spirit of their father Jacob revived. (28) “Enough!” said Israel. “My son Joseph is still alive! I must go and see him before I die.” (1) So Israel set out with all that was his, and he came to Beer-sheba, where he offered sacrifices to the God of his father Isaac. (2) God called to Israel in a vision by night: “Jacob! Jacob!” He answered, “Here.” (3) And God said, “I am God, the God of your father. Fear not to go down to Egypt, for I will make you there into a great nation. (4) I Myself will go down with you to Egypt, and I Myself will also bring you back; and Joseph’s hand shall close your eyes.”

(11) Then an angel of the Eternal called to him from heaven: “Abraham! Abraham!” And he answered, “Here I am.”

(4) When the Eternal saw that he had turned aside to look, God called to him out of the bush: “Moses! Moses!” He answered, “Here I am.”

(10) The Eternal came, and stood there, and He called as before: “Samuel! Samuel!” And Samuel answered, “Speak, for Your servant is listening.”

(12) "Moshe, Moshe," "Avraham, Avraham," "Yaakov, Yaakov," "Shmuel, Shmuel" — an expression of affection and urgency. Another connotation: "Moshe, Moshe" — He is "Moshe" before being spoken to; he is (the same, righteous) "Moshe" after being spoken to.

"And the angel of God called to him out of heaven, and said: Abraham, Abraham" (Gen. 22:11). Rabbi Chiya taught: This is an expression of love, this is an expression of urging. Rabbi Eliezer ben Yaakov said: He spoke to him and to future generations, there is no generation which does not contain people like Avraham, and there is no generation which does not contain people like Yaakov, Moshe, and Shmuel...

"God said: Moses, Moses..." You find that when the texts writes Abraham, Abraham (Genesis 22:11), there is a division between the two names; Jacob, Jacob (Genesis 46:2), there is a division; Samuel, Samuel (1 Samuel 3:10), there is a division; but in the case of Moses there is no division. Why is this? It is like the case of a person who was carrying a heavy burden and called out: ‘Here, So-and-so, So-and-so, come and take this load from me!’
Another interpretation: With all the prophets God stopped speaking with them, but with Moses God did not speak to the end of his days.

Rabbi Shimon Bar Yochai said: What is 'Moses, Moses'? An expression of affection and urgency.

Another interpretation: Moses, Moses - he taught Torah in this world, and will teach Torah in the world to come...

Why is "Noah Noah" (Gen. 6:9) written twice? Each and every righteous person in the world has two spirits. One stays in this world, while the other is in the World to Come. And so we find that the Holy Blessed One named all the righteous twice: "Moses, Moses" (Ex. 3:4), "Jacob, Jacob" (Gen. 46:2), "Abraham, Abraham" (Gen. 22:11), "Samuel, Samuel" (I Shmuel 3:10) with the exception of Isaac, about whom it isn't written like the others. Because when he approached the altar to be sacrificed, the soul that was within him in this world left him. And because it is said of Abraham, "blessed are You who resurrect the dead", so only the soul of the World to Come was returned to him. And that is why you shall find that the name of the Holy Blessed One was not unified (on any righteous person in his lifetime). It was unified only on Isaac, because he was already considered as dead. He was like those who pass away from this world. The verse therefore states: "Behold, He puts no trust in God's holy ones" (Job 15:15).