Why did Israel sing the song of Moses after the Red Sea crossing?
Israel sang after the Red Sea crossing because they looked back on the carnage of the Egyptians, their charioteers, horses, and everything else, and contrasted that with their own years of slavery, mistreatment, and suffering. Seeing their adversaries defeated, they could sing unto the Lord, who had triumphed gloriously.
Les explains that Israel had just come through the Red Sea and looked back to see the carnage of the Egyptians—charioteers, horses, and everything else floating. From a practical standpoint it was not a pretty picture, but when Israel remembered their years of slavery, mistreatment, and suffering, and then saw what had happened to their adversaries, no wonder they could sing. This is the song of Moses in Exodus 15. In verse 1, Moses and the children of Israel sang unto the Lord, saying, “I will sing unto the Lord, for he hath triumphed gloriously.” Les also points to a parallel: the Exodus experience with Pharaoh and the plagues is repeated in Revelation on a far grander scale, and tribulation saints removed from suffering into the Lord’s presence will likewise sing the song of Moses.