In Gen. 32:24-32, Jacob wrestles with a man he believes to be God, and is given a new name, Israel. It is interesting to note that, like the later Jesus stories, the man never identifies himself as God, but merely refuses to give his name. It is Jacob who names the location "Peniel," after the Hebrew for "face of God."
Also, this story reads like a classic myth or fairy tale, because of the ending: "Therefore the children of Israel eat not of the sinew which shrank, which is upon the hollow of the thigh, unto this day: because he [the man] touched the hollow of Jacob's thigh in the sinew that shrank." (Gen. 32:32, KJV) This is the first instance of such a moral ("this is why we do things today") in Genesis.