Genesis 24:2 And Abraham said unto his eldest servant of his house, that ruled over all that he had, Put, I pray thee, thy hand under my thigh:

Genesis 47:29 And the time drew nigh that Israel must die: and he called his son Joseph, and said unto him, If now I have found grace in thy sight, put, I pray thee, thy hand under my thigh, and deal kindly and truly with me; bury me not, I pray thee, in Egypt:

Ezekiel 17:18 Seeing he despised the oath by breaking the covenant, when, lo, he had given his hand, and hath done all these things, he shall not escape.