Genesis 21:22-24

At about that same time, Abimelech and the captain of his troops, Phicol, spoke to Abraham: “No matter what you do, God is on your side. So swear to me that you won’t do anything underhanded to me or any of my family. For as long as you live here, swear that you’ll treat me and my land as well as I’ve treated you.” Abraham said, “I swear it.”