Genesis 7:2 "You shall take with you of every clean animal by sevens, a male and his female; and of the animals that are not clean two, a male and his female;

Genesis 12:7 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.

Genesis 12:8 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.

Genesis 13:18 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.

Genesis 22:2 He said, "Take now your son, your only son, whom you love, Isaac, and go to the land of Moriah, and offer him there as a burnt offering on one of the mountains of which I will tell you."

Genesis 22:9 Then they came to the place of which God had told him; and Abraham built the altar there and arranged the wood, and bound his son Isaac and laid him on the altar, on top of the wood.

Exodus 10:25 But Moses said, "You must also let us have sacrifices and burnt offerings, that we may sacrifice them to the LORD our God.

Leviticus 11:1 The LORD spoke again to Moses and to Aaron, saying to them, (NASB ©1995)