Exodus 19:18-20

Revised Standard Version Catholic Edition

¹⁸ And Mount Sinai was wrapped in smoke, because the Lord descended upon it in fire; and the smoke of it went up like the smoke of a kiln, and the whole mountain quaked greatly. ¹⁹ And as the sound of the trumpet grew louder and louder, Moses spoke, and God answered him in thunder. ²⁰ And the Lord came down upon Mount Sinai, to the top of the mountain; and the Lord called Moses to the top of the mountain, and Moses went up.