Deuteronomy 27:5-10

5“Then build an altar there to the Lord your God, using natural, uncut stones. You must not shape the stones with an iron tool.

6Build the altar of uncut stones, and use it to offer burnt offerings to the Lord your God.

7Also sacrifice peace offerings on it, and celebrate by feasting there before the Lord your God.

8You must clearly write all these instructions on the stones coated with plaster.”

9Then Moses and the Levitical priests addressed all Israel as follows: “O Israel, be quiet and listen! Today you have become the people of the Lord your God.

10So you must obey the Lord your God by keeping all these commands and decrees that I am giving you today.”