Exodus 19:15-17 Complete Jewish Bible (CJB)
15 He said to the people, “Prepare for the third day; don’t approach a woman.”
16 On the morning of the third day, there was thunder, lightning and a thick cloud on the mountain. Then a shofar blast sounded so loudly that all the people in the camp trembled. 17 Moshe brought the people out of the camp to meet God; they stood near the base of the mountain.