Then one who had escaped came and told Abram the Hebrew [one from the other side], who was living by the oaks or terebinths of Mamre the Amorite, a brother of Eshcol and of Aner–these were allies of Abram.
So now, swear to me here by God that you will not deal falsely with me or with my son or with my posterity; but as I have dealt with you kindly, you will do the same with me and with the land in which you have sojourned.