Genesis 26:23-25 - The Lord Appears To Isaac
23 From there Isaac went up to Beer Sheba. 24 The Lord appeared to him that night and said, "I am the God of your father Abraham. Do not be afraid, for I am with you. I will bless you and multiply your descendants for the sake of my servant Abraham."
25 Then Isaac built an altar there and worshiped the Lord. He pitched his tent there, and his servants dug a well.