Genesis 21:30-34 Amplified Bible (AMP)

30. He said, You are to accept these seven ewe lambs from me as a witness for me that I dug this well.

31. Therefore that place was called Beersheba [well of the oath], because there both parties swore an oath.

32. Thus they made a covenant at Beersheba; then Abimelech and Phicol the commander of his army returned to the land of the Philistines.

33. Abraham planted a tamarisk tree in Beersheba and called there on the name of the Lord, the Eternal God.

34. And Abraham sojourned in Philistia many days.

Genesis 21