Exodus 20:20-24

However, Moses said to the people, “Do not be afraid; for God has come in order to test you, and in order that the fear of Him may remain with you, so that you will not sin.”

So the people stood at a distance, while Moses approached the thick darkness where God was.

Then the Lord said to Moses, “This is what you shall say to the sons of Israel: ‘You yourselves have seen that I have spoken to you from heaven.

You shall not make other gods besides Me; gods of silver or gods of gold, you shall not make for yourselves.

You shall make an altar of earth for Me, and you shall sacrifice on it your burnt offerings and your peace offerings, your sheep and your oxen; in every place where I cause My name to be remembered, I will come to you and bless you.