Revelation 15:3

the song of Moses Exodus 15 the song of God's redeemed people, delivered from their enemies, and confident of coming, but not come yet, "unto the rest and to the inheritance which the Lord their God doth give unto them." There is probably no allusion to their coming from the "Red Sea" of martyrdom: that is a pretty conceit, but below the dignity of prophecy.

the servant of God Exodus 14:31 is particularly referred to; but also in Numbers 12:7; Joshua 1:1-2; Joshua 1:7; Joshua 1:13; Joshua 1:15; Joshua 22:5; Psalms 105:26 "the servant of the Lord" is used as a special honourable title of Moses: cf. Hebrews 3:5.

the song of the Lamb For the Lamb has redeemed them, as Moses redeemed Israel. "The song of the Lamb" is not a differentsong from "the song of Moses," but the same interpreted in a higher sense: well illustrated by the Christian use of Psalms 114, and the other Passover Psalms, in our Easter services.

Great and marvellous&c. There maybe references to Psalms 111:2; Psalms 139:14; Psalms 145:17: but this psalm rather continues the spirit of those than combines their words. It is noticeable that this song, alone of those occurring in this book, has the parallelismor quasi-metrical structure of Hebrew poetry.

of saints Read, of the nations or of the ages; the best editors are divided in their preference for one of these readings, but both are better attested than that of the received text. See Jeremiah 10:7, which no doubt is quoted, in these words and the clause following, and perhaps decides the balance of probability in favour of "nations."