Deuteronomy 27:8

5 And there shalt thou build an altar unto Jehovah thy God, an altar of stones: thou shalt lift up no iron [tool] upon them.

6 Thou shalt build the altar of Jehovah thy God of unhewn stones; and thou shalt offer burnt-offerings thereon unto Jehovah thy God:

7 and thou shalt sacrifice peace-offerings, and shalt eat there; and thou shalt rejoice before Jehovah thy God.

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

9 And Moses and the priests the Levites spake unto all Israel, saying, Keep silence, and hearken, O Israel: this day thou art become the people of Jehovah thy God.

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

11 And Moses charged the people the same day, saying,