Exodus 19:9-11

Contemporary English Version

⁹ The Lord said to Moses, “I will come to you in a thick cloud and let the people hear me speak to you. Then they will always trust you.” Again Moses reported to the Lord what the people had said.

¹⁰ Once more the Lord spoke to Moses:

Go back and tell the people that today and tomorrow they must get themselves ready to meet me. They must wash their clothes ¹¹ and be ready by the day after tomorrow, when I will come down to Mount Sinai, where all of them can see me.