Deuteronomy 27:8

5 There shall you build an altar to Yahweh your God, an altar of stones: you shall lift up no iron [tool] on them.

6 You shall build the altar of Yahweh your God of uncut stones; and you shall offer burnt offerings thereon to Yahweh your God:

7 and you shall sacrifice peace-offerings, and shall eat there; and you shall rejoice before Yahweh your God.

8 You shall write on the stones all the words of this law very plainly.

9 Moses and the priests the Levites spoke to all Israel, saying, Keep silence, and listen, Israel: this day you are become the people of Yahweh your God.

10 You shall therefore obey the voice of Yahweh your God, and do his commandments and his statutes, which I command you this day.

11 Moses charged the people the same day, saying,