Genesis 26:17-25

So Isaac moved away from there and camped in the Valley of Gerar, where he settled. Isaac reopened the wells that had been dug in the time of his father Abraham, which the Philistines had stopped up after Abraham died, and he gave them the same names his father had given them. Isaac’s servants dug in the valley and discovered a well of fresh water there. But the herdsmen of Gerar quarrelled with those of Isaac and said, ‘The water is ours!’ So he named the well Esek, because they disputed with him. Then they dug another well, but they quarrelled over that one also; so he named it Sitnah. He moved on from there and dug another well, and no-one quarrelled over it. He named it Rehoboth, saying, ‘Now the LORD has given us room and we will flourish in the land.’ From there he went up to Beersheba. That night the LORD appeared to him and said, ‘I am the God of your father Abraham. Do not be afraid, for I am with you; I will bless you and will increase the number of your descendants for the sake of my servant Abraham.’ Isaac built an altar there and called on the name of the LORD. There he pitched his tent, and there his servants dug a well.