Genesis 26:26-33 - Covenant With Abimelech
26 Then came Abimelech to him from Gerar; and Ahuzzath his friend, and Phicol his chief captain. 27 And Isaac said unto them, "Wherefore come ye to me, seeing ye hate me and have put me away from you?"
28 Then said they, "We saw that the LORD was with thee, and therefore we said that there should be an oath betwixt us and thee, and that we would make a bond with thee: 29 that thou shouldest do us no hurt, as we have not touched thee, and have done unto thee nothing but good, and send thee away in peace: for thou art now the blessed of the LORD."
30 And he made them a feast, and they ate and drank. 31 And they rose up betimes in the morning and sware one to another. And Isaac sent them away. And they departed from him in peace.
32 And the same day came Isaac's servants, and told him of a well which they had digged: and said unto him, that they had found water. 33 And he called it Sheba, wherefore the name of the city is called Beersheba unto this day.