Now then, get me a musician.”
As the musician played, GOD’s hand came upon him,
And that if he is a prophet, his prophecy departs from him, we learn from Elisha, as it is written that he became angry with the king of Israel and said to him: “Were it not that I have regard for the presence of Jehoshaphat the king of Judea, I would not look toward you, nor see you” (II Kings 3:14), and it is afterward written: “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). Because Elisha became angry with the king of Israel, his prophetic spirit departed from him and a minstrel was needed to rouse it anew.
The Gemara adds: Incidentally, this serves to teach you that the Divine Presence rests upon an individual neither from an atmosphere of laziness, nor from an atmosphere of sadness, nor from an atmosphere of laughter, nor from an atmosphere of frivolity, nor from an atmosphere of idle chatter, but rather from an atmosphere imbued with the joy of a mitzva. As it is stated with regard to Elisha, 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).
And Jacob called his sons and said, “Come together that I may tell you what is to befall you in days to come.
ואגידה לכם THAT I MAY TELL YOU — He wished to reveal to them the end of Israel’s exile but the Shechinah departed from him and he began to speak of other things (Genesis Rabbah 98:2).
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When Jacob said to his sons, “I will tell you what will befall you in the latter end of days”, a kind of sadness came over him and the Shekinah departed. His sons, however, raised their voices and said, “Hear, O Israel, etc.”, and Jacob answered, “Blessed be the name of his glorious kingdom for ever and ever”, and on this proclamation of the unity the Shekinah returned to its place. AND JACOB CALLED. The word ‘called’ signifies that he established them in their place above and below.