Genesis 12:7-8

⁷The Lord appeared to Abram and said, “To your descendants I will give this land.” So he built an altar there to the Lord who had appeared to him. ⁸Then he proceeded from there to the mountain 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 called upon the name of the Lord.