Exodus 15 starts with a song to the Lord, in which Moses and the Israelites praise Him for their deliverance and His glory which was displayed in their rescue from Pharaoh's army. Then as they traveled from the Red Sea into the desert, they did not have water for 3 days. They cried out to the Lord and He provided water for them to drink. God said to them, "If you listen carefully to the voice of the Lord your God and do what is right in His eyes, if you pay attention to His commands and keep all His decrees, I will not bring on you any of the diseases I brought on the Egyptians, for I am the Lord, who heals you." God then led them to Elim, where there was shelter and water and they camped there.