Gen 12:7-8

7Then the Lord appeared to Abram, and said, “To your offspring I will give this land.” So he built there an altar to the Lord, who had appeared to him.8From there he moved on to the hill country on the east of Bethel, and pitched his tent, with Bethel on the west and Ai on the east; and there he built an altar to the Lord and invoked the name of the Lord.