'Uncut' in the Bible

You shall build the altar of the Lord your God of uncut stones, and you shall offer on it burnt offerings to the Lord your God;

just as Moses the servant of the Lord had commanded the sons of Israel, as it is written in the book of the law of Moses, an altar of uncut stones on which no man had wielded an iron tool; and they offered burnt offerings on it to the Lord, and sacrificed peace offerings.