Altar: Mosaic Commandments Prescribing the Construction of

You are to make for Me an altar of earth, and sacrifice on it your burnt offerings and peace offerings, your sheep and goats and cattle. In every place where I cause My name to be remembered, I will come to you and bless you. …

Moreover, you are to build there an altar to the LORD your God, an altar of stones. You must not use any iron tool on them. …

At that time Joshua built an altar on Mount Ebal to the LORD, the God of Israel,

…just as Moses the servant of the LORD had commanded the Israelites. He built it according to what is written in the Book of the Law of Moses: “an altar of uncut stones on which no iron tool has been used.” And on it they offered burnt offerings to the LORD, and they sacrificed peace offerings.