Genesis 12:8

From there Abram moved on to the hill country east of Bethel and pitched his tent, with Bethel to the west and Ai to the east. There he built an altar to the LORD, and he called on the name of the LORD.

And he removed from thence unto a mountain on the east of Beth-el, and pitched his tent, having Beth-el on the west, and Hai on the east: and there he builded an altar unto the LORD, and called upon the name of the LORD.