The KJV Bible Explains:
22 And he rose up that night, and took his two wives, and his two womenservants, and his eleven sons, and passed over the ford Jabbok.
23 And he took them, and sent them over the brook, and sent over that he had.
24 And Jacob was left alone; and there wrestled a man with him until the breaking of the day.
25 And when he saw that he prevailed not against him, he touched the hollow of his thigh; and the hollow of Jacob’s thigh was out of joint, as he wrestled with him.
26 And he said, Let me go, for the day breaketh. And he said, I will not let thee go, except thou bless me.
27 And he said unto him, What is thy name? And he said, Jacob.
28 And he said, Thy name shall be called no more Jacob, but Israel: for as a prince hast thou power with God and with men, and hast prevailed.
29 And Jacob asked him, and said, Tell me, I pray thee, thy name. And he said, Wherefore is it that thou dost ask after my name? And he blessed him there.
30 And Jacob called the name of the place Peniel: for I have seen God face to face, and my life is preserved.
31 And as he passed over Penuel the sun rose upon him, and he halted upon his thigh (walked with a limp)
32 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 touched the hollow of Jacob’s thigh in the sinew that shrank.
The sun rose on him as he passed over Peniel, and he limped because of his thigh.
Therefore the children of Israel don’t eat the sinew of the hip, which is on the hollow of the thigh, to this day, because he touched the hollow of Jacob’s thigh in the sinew of the hip.