Exodus 19:3-7

And Moses went up to God, and the Lord called to him from the mountain, saying, “This is what you shall say to the house of Jacob and tell the sons of Israel:

‘You yourselves have seen what I did to the Egyptians, and how I carried you on eagles’ wings, and brought you to Myself.

Now then, if you will indeed obey My voice and keep My covenant, then you shall be My own possession among all the peoples, for all the earth is Mine;

and you shall be to Me a kingdom of priests and a holy nation.’ These are the words that you shall speak to the sons of Israel.”

So Moses came and called the elders of the people, and set before them all these words which the Lord had commanded him.