Exodus 19:8-10 Common English Bible (CEB)
8 The people all responded with one voice: “Everything that the Lord has said we will do.” Moses reported to the Lord what the people said.
Preparing for a divine encounter
9 Then the Lord said to Moses, “I’m about to come to you in a thick cloud in order that the people will hear me talking with you so that they will always trust you.”
Moses told the Lord what the people said, 10 and the Lord said to Moses: “Go to the people and take today and tomorrow to make them holy. Have them wash their clothes.