Genesis

¹And Abraham was old, and well stricken in age: and the Lord had blessed Abraham in all things. ²And Abraham said unto his servant, the elder of his house, that ruled over all that he had, Put, I pray thee, thy hand under my thigh: ³and I will make thee swear by the Lord, the God of heaven and the God of the earth, that thou shalt not take a wife for my son of the daughters of the Canaanites, among whom I dwell: ⁴but thou shalt go unto my country, and to my kindred, and take a wife for my son Isaac. ⁵And the servant said unto him, Peradventure the woman will not be willing to follow me unto this land: must I needs bring thy son again unto the land from whence thou camest? ⁶And Abraham said unto him, Beware thou that thou bring not my son thither again.