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
Augustine of Hippo
AD 430
For, putting the hand under the thigh of a man and swearing by the God of heaven, what else did that signify except that in that flesh, which took its origin from that thigh, the God of heaven would come? Marriage therefore is a good in which the married are better in proportion as they fear God more chastely and more faithfully, especially if they also nourish spiritually the children whom they desire carnally.