Then Jacob asked him, “Please tell me your name.” But he said, “Why is it that you ask my name?” And there he blessed him.
29. Tell me, I pray thee, thy name. This seems opposed to what is declared above; for I have lately said, that when Jacob sought a blessing, it was a token of his submission. Why, therefore, as if he were of doubtful mind, does he now inquire the name of him whom he had before acknowledged to be God?
We have here the remarkable story of Jacob's wrestling with the angel and prevailing, which is referred to, Hos 12:4. Very early in the morning, a great while before day, Jacob had helped his wives and his children over the river, and he desired to be private, and was left alone, that he might again more fully spread his cares and fears before God in prayer.
Commenting on Genesis 32:24-32
And Jacob asked him, and said, tell me, I pray thee, thy name,.... Being asked his own name, and told it, and having another given him more significative and expressive, he is emboldened to ask the person that wrestled with him what was his name; Exo 3:13; for Jacob knew that he was God, as appears by his earnest desire to be blessed by him...