Genesis 12:6-7

6Abram walked through the land. He went as far as Shechem, to the special oak tree of Moreh. At that time, Canaanites lived in this land.

7The Lord appeared to Abram there. He said, ‘I will give this land to your descendants.’ So Abram built an altar in that place to worship the Lord. He did that because the Lord had appeared to him.