Genesis 12:8 New International Version (NIV)

⁸ From there he went on toward the hills east of Bethel and pitched his tent, with Bethel on the west and Ai on the east. There he built an altar to the Lord and called on the name of the Lord.

Genesis 18:1 New International Version (NIV)

The Three Visitors

18 The Lord appeared to Abraham near the great trees of Mamre while he was sitting at the entrance to his tent in the heat of the day.

Genesis 18:9 New International Version (NIV)

⁹ “Where is your wife Sarah?” they asked him.

“There, in the tent,” he said.