Exodus 19:15-17 Modern English Version (MEV)
15 He said to the people, “Be ready for the third day. Do not go near your wives.”
16 So on the third day, in the morning, there was thunder and lightning, and a thick cloud on the mountain, and the sound of an exceedingly loud trumpet. All the people who were in the camp trembled. 17 Then Moses brought the people out of the camp to meet with God, and they stood at the foot of the mountain.