Genesis 21:25-30

25But when Abraham complained to Abimelech about a well that Abimelech’s servants had seized, 26Abimelech replied, “I do not know who has done this. You did not tell me, so I have not heard about it until today.”

27So Abraham brought sheep and cattle and gave them to Abimelech, and the two men made a covenant. 28Abraham separated seven ewe lambs from the flock, 29and Abimelech asked him, “Why have you set apart these seven ewe lambs?”

30He replied, “You are to accept the seven ewe lambs from my hand as my witness that I dug this well.”