Revelation 15:3

Song of Moses. This is undoubtedly a reference to the song of deliverance after Israel crossed the Red Sea (Ex. 15:1–21). That song celebrated the deliverance from Egyptian oppression; the new song, deliverance from the tyranny of “Babylon the great” (Rev. 17:5).

Servant of God. Compare Joshua 14:7, where Moses is designated “the servant of the Lord,” and Ex. 14:31, where he is called “his [the Lord’s] servant.”

Of the Lamb. The deliverance of the saints was wrought by Christ, the Lamb of God (see on ch. 17:14), and it is but natural that He should be adored and exalted in the song of deliverance.

Great and marvellous. There are many allusions to OT phraseology in this song. The marvelous works of God are extolled in Ps. 139:14; cf. Ps. 111:2, 4. There may be a specific reference here to the “works” of God in the seven last plagues. The “sign” delineating these plagues is described as “great and marvellous” (Rev. 15:1).

Lord God Almighty. See on ch. 1:8.

Just and true. Or, “righteous and genuine.” Compare Deut. 32:4 (LXX); Ps. 145:17; Rev. 16:7; 19:2.

King of saints. Textual evidence is divided (cf. p. 10) between the reading “King of nations” and “King of ages.” The reading “King of saints” has little support. In Jer. 10:7 the Lord is called “King of nations.” This reading fits the thought of Rev. 15:4, where the prediction is made that all nations shall come and worship before God.