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, if Joseph was willing to do him a last great favor, put, I pray thee, thy hand under my thigh, in a gesture accompanying a solemn oath, and deal kindly and truly with me; it would be an act of kindness and of faithfulness. Bury me not, I pray thee, in Egypt;