Exodus 19:15-17

New Catholic Bible

¹⁵ Then he said to the people, “Be ready in three days’ time. Abstain from sexual relations.”

¹⁶ The Great Theophany. On the third day, as morning dawned, there was thunder, lightning, a dense cloud on the mountain, and the sound of loud trumpets. All the people in the camp were filled with fear.

¹⁷ Moses brought the people out of the camp to meet God. They stood on foot at the base of the mountain.