"Now this is what you shall do to them to consecrate them, that they may serve me as priests. Take one bull of the herd and two rams without blemish,...
They set out from Elim, and all the congregation of the people of Israel came to the wilderness of Sin, which is between Elim and Sinai, on the fifteenth day of the second month after they had departed from the land of Egypt....
Then Moses and the people of Israel sang this song to the Lord, saying, "I will sing to the Lord, for he has triumphed gloriously; the horse and his rider he has thrown into the sea....
The Lord said to Moses, "Yet one plague more I will bring upon Pharaoh and upon Egypt. Afterward he will let you go from here. When he lets you go, he will drive you away completely....
Then the Lord said to Moses, "Go in to Pharaoh, for I have hardened his heart and the heart of his servants, that I may show these signs of mine among them,...
Then the Lord said to Moses, "Go in to Pharaoh and say to him, 'Thus says the Lord, the God of the Hebrews, "Let my people go, that they may serve me....