“Then Abimelech went to him from Gerar, with Ahuzzath his adviser and Phicol the commander of his army. Isaac said to them, ‘Why have you come to me, seeing that you hate me and have sent me away from you?’ They said, ‘We see plainly that Yahweh has been with you. So we say, let there be an oath between you and us, and let us make a covenant with you so that you will do us no harm, just as we have not touched you and have done to you nothing but good and have sent you away in peace. You are now the blessed of Yahweh.’ So he made them a feast, and they ate and drank.”
Then King Abimelech with his army advisor Phicol came to Isaac. This is the only mention of Ahuzzath. Isaac wanted to know why they had come to him since they hated him and had asked him to leave. Now Abimelech, who said that God was with Isaac, concluded an alliance with Isaac, like the one between his father Abraham and himself in chapter 21, so that they ate and drank together.
“In the morning they rose early and exchanged oaths with one another. Isaac set them on their way and they departed from him in peace. That same day Isaac’s servants came and told him about the well that they had dug, and said to him, ‘We have found water!’ He called it Shibah. Therefore the name of the city is Beer-sheba to this day.”
The next day Isaac’s servants came to tell him that they had found water at a well called Shibah. Thus the name of that place became Beer-sheba, as if that was not the name of the place already. This is the only place in biblical literature it is called Shibah. The more common name of Beer-sheba appears over 33 times.