And Moses wrote all the words of LORD, and rose up early in the morning, and built an altar below the mount, and twelve pillars, according to the twelve tribes of Israel.
And he moved from there to the mountain on the east of Bethel, and pitched his tent, having Bethel on the west, and Ai on the east. And there he built an altar to LORD, and called upon the name of LORD.
And thou shall make the altar of acacia wood, five cubits long, and five cubits broad (the altar shall be foursquare), and the height of it shall be three cubits.