Joshua 8:30-31

30Then Joshua built an altar on Ebal mountain, to worship the Lord, Israel's God.

31He built it as the Lord's servant, Moses, had told the Israelites to do. Moses had written this on the scroll of God's laws. The law said, ‘You must build an altar with whole stones that you have not cut. Do not use any iron tools on them.’ They made burnt offerings on the altar to worship the Lord. They also made sacrifices as friendship offerings.