'Built an Altar' in the Bible

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

Yahweh appeared to Abram and said, "I will give this land to your seed." He built an altar there to Yahweh, who appeared to him.

He left from there to the mountain on the east of Bethel, and pitched his tent, having Bethel on the west, and Ai on the east. There he built an altar to Yahweh and called on the name of Yahweh.

Abram moved his tent, and came and lived by the oaks of Mamre, which are in Hebron, and built an altar there to Yahweh.

He built an altar there, and called on the name of Yahweh, and pitched his tent there. There Isaac's servants dug a well.

He built an altar there, and called the place El Beth El; because there God was revealed to him, when he fled from the face of his brother.