Deuteronomy 27:4-6

Darby Translation

⁴ And it shall be when ye go over the Jordan, that ye shall set up these stones, as I command you this day, on mount Ebal, and thou shalt plaster them with plaster.

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.