'Built an Altar' in the Bible

Then Noah built an altar to the Lord, and took of every clean animal and of every clean bird and offered burnt offerings on the altar.

The 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.

Then 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.

Then Abram moved his tent and came and dwelt by the oaks of Mamre, which are in Hebron, and there he built an altar to the Lord.

So he built an altar there and called upon the name of the Lord, and pitched his tent there; and there Isaac’s servants dug a well.

He built an altar there, and called the place El-bethel, because there God had revealed Himself to him when he fled from his brother.