Genesis 32:31

26 and he saith, `Send me away, for the dawn hath ascended:` and he saith, `I send thee not away, except thou hast blessed me.`

27 And he saith unto him, `What [is] thy name?` and he saith, `Jacob.`

28 And he saith, `Thy name is no more called Jacob, but Israel; for thou hast been a prince with God and with men, and dost prevail.`

29 And Jacob asketh, and saith, `Declare, I pray thee, thy name;` and he saith, `Why [is] this, thou askest for My name?` and He blesseth him there.

30 And Jacob calleth the name of the place Peniel: for `I have seen God face unto face, and my life is delivered;`

31 and the sun riseth on him when he hath passed over Penuel, and he is halting on his thigh;

32 therefore the sons of Israel do not eat the sinew which shrank, which [is] on the hollow of the thigh, unto this day, because He came against the hollow of Jacob`s thigh, against the sinew which shrank.