These traditions follow Revelation 15:3 by calling it the 'Song of Moses' (not to be confused with the Song of Moses in Deuteronomy). It is also used in the Roman Catholic, Eastern Orthodox, and other Christian liturgies at the Easter Vigil when the history of salvation is recounted. The poem also comprises the first ode or hymn of the Eastern Orthodox canon, where it is known as the Song or Ode of Moses. The poem is included in Jewish prayer books, and recited daily in the morning shacharit services. The Song of the Sea was reputedly sung by the Israelites after their crossing the Red Sea in safety, and celebrates the destruction of the Egyptian army during the crossing, and looks forward to the future conquest of Canaan. It is followed in verses 20 and 21 by a much shorter song sung by Miriam and the other women. The Song of the Sea ( Hebrew: שירת הים, Shirat HaYam, also known as Az Yashir Moshe and Song of Moses, or Mi Chamocha) is a poem that appears in the Book of Exodus of the Hebrew Bible, at Exodus 15:1–18.
