Deuteronomy 27:7 DBY

⁵  And there shalt thou build an altar to Jehovah thy God, an altar of stones; thou shalt not lift up an iron [tool] upon them;

⁶  of whole stones shalt thou build the altar of Jehovah thy God; and thou shalt offer up burnt-offerings thereon to Jehovah thy God.

⁷  And thou shalt sacrifice peace-offerings, and shalt eat there, and rejoice before Jehovah thy God.

⁸  And thou shalt write upon the stones all the words of this law very plainly.

⁹  And Moses and the priests, the Levites, spoke to all Israel, saying, Be silent and hearken, Israel! this day thou art become the people of Jehovah thy God.