Exodus 24:3-4

Brenton(i) 3 And Moses went in and related to the people all the words of God and the ordinances; and all the people answered with one voice, saying, All the words which the Lord has spoken, we will do and be obedient. 4 And Moses wrote all the words of the Lord; and Moses rose up early in the morning, and built an altar under the mountain, and set up twelve stones for the twelve tribes of Israel.