Exodus 20:23

²¹And the people stood afar off, and Moses went into the darkness where God was.

²²And the Lord said to Moses, Thus shalt thou say to the house of Jacob, and thou shalt report it to the children of Israel, Ye have seen that I have spoken to you from heaven.

— Exodus 20:23 —

²⁴Ye shall make to me an altar of earth; and upon it ye shall sacrifice your whole burnt offerings, and your peace offerings, and your sheep and your calves in every place, where I shall record my name; and I will come to thee and bless thee.

²⁵And if thou wilt make to me an altar of stones, thou shalt not build them hewn stones; for thou hast lifted up thy tool upon them, and they are defiled.