Genesis 32:27

And he said unto him, What is thy name? And he said, Jacob.

Cross-reference

Genesis 32:29 Historical context

Genesis 32:29 continues the dialogue — having asked Jacob's name, the man now refuses to give his own, yet blesses Jacob anyway, deepening the mystery.

Genesis 35:10 formally reiterates the name Israel at Bethel, making the renaming from the Peniel encounter an official divine decree.