Genesis 26:26-33

26Abimelech, his friend Ahuzzath, and Phicol, the commander of his army, came from Gerar to see Isaac.

27Isaac asked them, “Why have you come to me, since you hate me and sent me away from you?”

28They answered, “We have seen that the Lord is with you. So we thought, ‘There should be a solemn agreement between us.’ We’d like to make an agreement with you

29that you will not harm us, since we have not touched you. We have done only good to you and let you go in peace. Now you are blessed by the Lord.”

30Isaac prepared a special dinner for them, and they ate and drank.

31Early the next morning they exchanged oaths. Then Isaac sent them on their way, and they left peacefully.

32That same day Isaac’s servants came and told him about a well they had dug. They said to him, “We’ve found water.”

33So he named it Shibah [Oath]. That is why the name of the city is still Beersheba today.