Genesis 24:2-4

2And Abraham said to his servant, athe oldest of his household, who had charge of all that he had, bPut your hand under my thigh, 3that I may make you swear by the Lord, the God of heaven and God of the earth, that cyou will not take a wife for my son from the daughters of the Canaanites, among whom I dwell, 4 dbut will go to my country and to my kindred, and take a wife for my son Isaac.”
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