Genesis 32
24 Ref Jacob was left alone, and wrestled with a man there until the breaking of the day.
25 Ref When he saw that he didn't prevail against him, he touched the hollow of his thigh, and the hollow of Jacob's thigh was strained, as he wrestled.
26 Ref The man said, "Let me go, for the day breaks." Jacob said, "I won't let you go, unless you bless me."
27 He said to him, "What is your name?" He said, "Jacob."
28 Ref He said, "Your name will no longer be called 'Jacob,' but, 'Israel,' for you have fought with God and with men, and have prevailed."