Deuteronomy 27:6-10

Thou shalt build the altar of the LORD thy God of whole stones: and thou shalt offer burnt offerings thereon unto the LORD thy God:

And thou shalt offer peace offerings, and shalt eat there, and rejoice before the LORD thy God.

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

And Moses and the priests the Levites spake unto all Israel, saying, Take heed, and hearken, O Israel; this day thou art become the people of the LORD thy God.

Thou shalt therefore obey the voice of the LORD thy God, and do his commandments and his statutes, which I command thee this day.