Genesis 12:7-9

And Jehovah appeared unto Abram, and said, Unto thy seed will I give this land: and there builded he an altar unto Jehovah, who appeared unto him. And he removed from thence unto the mountain on the east of Beth-el, and pitched his tent, having Beth-el on the west, and Ai on the east: and there he builded an altar unto Jehovah, and called upon the name of Jehovah. And Abram journeyed, going on still toward the South.