And he said, Let me go, for the column of the morning ascendeth; and the hour cometh when the angels on high offer praise to the Lord of the world: and I am one of the angels of praise, but from the day that the world was created my time to praise hath not come until now. And he said, I will not let thee go, until thou bless me.
The Angel Who Had Never Sung Before Dawn
Targum Pseudo-Jonathan on Genesis 32:27