Exodus 19:15-17 The Message (MSG)
14-15 Moses went down the mountain to the people and prepared them for the holy meeting. They gave their clothes a good scrubbing. Then he addressed the people: “Be ready in three days. Don’t sleep with a woman.”
16 On the third day at daybreak, there were loud claps of thunder, flashes of lightning, a thick cloud covering the mountain, and an ear-piercing trumpet blast. Everyone in the camp shuddered in fear.
17 Moses led the people out of the camp to meet God. They stood at attention at the base of the mountain.