Exodus 19:15-17 Expanded Bible (EXB)
15 Then Moses said to the people, “Be ready in three days. Do not ·have sexual relations during this time [L touch a woman; C an emission of semen rendered a man ritually unclean; Lev. 15:16–18].”
16 On the morning of the third day, there was thunder and lightning with a thick cloud on the mountain. There was a very loud blast from a ·trumpet [ram’s horn], ·and [or so that] all the people in the camp trembled. 17 Then Moses ·led [brought] the people out of the camp to meet God, and they stood at the foot of the mountain.