Genesis 24:2-3

MLV(i) 2 And Abraham said to his servant, the elder of his house, who ruled over all that he had, I beseech you, put your hand under my thigh. 3 And I will make you swear by Jehovah, the God of heaven and the God of the earth, that you will not take a wife for my son of the daughters of the Canaanites, among whom I dwell.