Deuteronomy 27:4-8 "When you've crossed over the Jordan, use these stones & some plaster to build an altar on Mt Ebal to the Lord your God. Don't use tools, built it with your hands! You shall offer burnt offerings on it to the Lord your God, make peace offerings & have a feast there. You shall rejoice before the Lord your God. And you shall write on the stones all the words of the law."