3 Then Moses climbed the mountain to appear before God. The Lord called to him from the mountain and said, “Give these instructions to the family of Jacob; announce it to the descendants of Israel: 4 ‘You have seen what I did to the Egyptians. You know how I carried you on eagles’ wings and brought you to myself. 5 Now if you will obey me and keep my covenant, you will be my own special treasure from among all the peoples on earth; for all the earth belongs to me. 6 And you will be my kingdom of priests, my holy nation.’ This is the message you must give to the people of Israel.”
7 So Moses returned from the mountain and called together the elders of the people and told them everything the Lord had commanded him. 8 And all the people responded together, “We will do everything the Lord has commanded.” So Moses brought the people’s answer back to the Lord.
9 Then the Lord said to Moses, “I will come to you in a thick cloud, Moses, so the people themselves can hear me when I speak with you. Then they will always trust you.”
Moses told the Lord what the people had said. 10 Then the Lord told Moses, “Go down and prepare the people for my arrival. Consecrate them today and tomorrow, and have them wash their clothing. 11 Be sure they are ready on the third day, for on that day the Lord will come down on Mount Sinai as all the people watch.