And Moses went up to God, and the LORD called to him from the mountain, saying, "Thus you shall say to the house of Jacob, and tell the children of Israel:
Exodus 19:3
Surrounding context
19:2 For they had departed from Rephidim, had come to the Wilderness of Sinai, and camped in the wilderness. So Israel camped there before the mountain.
19:3 And Moses went up to God, and the LORD called to him from the mountain, saying, "Thus you shall say to the house of Jacob, and tell the children of Israel:
19:4 "You have seen what I did to the Egyptians, and how I bore you on eagles' wings and brought you to Myself.