Genesis 21:22-24

And it came to pass at that time, that Abimelech and Phichol the chief captain of his host spake unto Abraham, saying, God {is} with thee in all that thou doest: Now therefore swear unto me here by God that thou wilt not deal falsely with me, nor with my son, nor with my son's son: {but} according to the kindness that I have done unto thee, thou shalt do unto me, and to the land wherein thou hast sojourned. {that thou...: Heb. if thou shalt lie unto me} And Abraham said, I will swear.