Genesis 26:17-25

So Isaac left. He camped in the valley of Gerar and settled down there. Isaac dug again the wells which were dug in the days of his father Abraham but had been clogged up by the Philistines after Abraham’s death. And he renamed them, using the original names his father had given them. One day, as Isaac’s servants were digging in the valley, they came on a well of spring water. The shepherds of Gerar quarreled with Isaac’s shepherds, claiming, “This water is ours.” So Isaac named the well Esek (Quarrel) because they quarreled over it. They dug another well and there was a difference over that one also, so he named it Sitnah (Accusation). He went on from there and dug yet another well. But there was no fighting over this one so he named it Rehoboth (Wide-Open Spaces), saying, “Now GOD has given us plenty of space to spread out in the land.” From there he went up to Beersheba. That very night GOD appeared to him and said, I am the God of Abraham your father; don’t fear a thing because I’m with you. I’ll bless you and make your children flourish because of Abraham my servant. Isaac built an altar there and prayed, calling on GOD by name. He pitched his tent and his servants started digging another well.