Exodus 19:14-16

Holman Christian Standard Bible

¹⁴ Then Moses came down from the mountain to the people and consecrated them, and they washed their clothes. ¹⁵ He said to the people, “Be prepared by the third day. Do not have sexual relations with women.”

¹⁶ On the third day, when morning came, there was thunder and lightning, a thick cloud on the mountain, and a loud trumpet sound, so that all the people in the camp shuddered.