Exodus 20:17-21

“You shall not covet your neighbor’s house; you shall not covet your neighbor’s wife, or his male slave, or his female slave, or his ox, or his donkey, or anything that belongs to your neighbor.”

And all the people were watching and hearing the thunder and the lightning flashes, and the sound of the trumpet, and the mountain smoking; and when the people saw it all, they trembled and stood at a distance.

Then they said to Moses, “Speak to us yourself and we will listen; but do not have God speak to us, or we will die!”

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.