And Abraham said unto his eldest servant of his house, that ruled over all that he had, Put, I pray you, your hand under my thigh:
All Commentaries on Genesis 24:2 Go To Genesis 24
Ephrem The Syrian
AD 373
Abraham made him swear by the covenant of circumcision. Because God saw that the two heads of the world had dishonored this member, he set the sign of the covenant on it so that this member, which was the most despised of all the limbs, would now be the most honored of all the limbs. The sign of the covenant that was set on it bestowed such great honor that those who take oaths now swear by it and all those who administer oaths make them swear by it.