He made the altar of burnt offering of acacia wood. It was square. Its length was five cubits,A cubit is the length from the tip of the middle finger to the elbow on a man’s arm, or about 18 inches or 46 centimeters. its width was five cubits, and its height was three cubits.
Genesis 4:3
As time passed, Cain brought an offering to Yahweh from the fruit of the ground.
Genesis 4:4
Abel also brought some of the firstborn of his flock and of its fat. Yahweh respected Abel and his offering,
Genesis 4:5
but he didn’t respect Cain and his offering. Cain was very angry, and the expression on his face fell.
Genesis 6:14
Make a ship of gopher wood. You shall make rooms in the ship, and shall seal it inside and outside with pitch.
Genesis 8:20
Noah built an altar to Yahweh, and took of every clean animal, and of every clean bird, and offered burnt offerings on the altar.