Joshua 8:31

31 just as Moses the servant of the Lord had commanded the Israelites, as it is written in the book of the law of Moses, "an altar of unhewn stones, on which no iron tool has been used"; and they offered on it burnt offerings to the Lord, and sacrificed offerings of well-being.

Joshua 8:31 In-Context

29 And he hanged the king of Ai on a tree until evening; and at sunset Joshua commanded, and they took his body down from the tree, threw it down at the entrance of the gate of the city, and raised over it a great heap of stones, which stands there to this day.
30 Then Joshua built on Mount Ebal an altar to the Lord, the God of Israel,
31 just as Moses the servant of the Lord had commanded the Israelites, as it is written in the book of the law of Moses, "an altar of unhewn stones, on which no iron tool has been used"; and they offered on it burnt offerings to the Lord, and sacrificed offerings of well-being.
32 And there, in the presence of the Israelites, Joshua wrote on the stones a copy of the law of Moses, which he had written.
33 All Israel, alien as well as citizen, with their elders and officers and their judges, stood on opposite sides of the ark in front of the levitical priests who carried the ark of the covenant of the Lord, half of them in front of Mount Gerizim and half of them in front of Mount Ebal, as Moses the servant of the Lord had commanded at the first, that they should bless the people of Israel.

Footnotes 1

New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.