Revelation 15:3

And they sing the song of Moses the seruant of God, and the song of the Lambe, saying, Great and marueilous are thy workes, Lord God Almightie, iust and true are thy wayes, thou king of saints. Revelation 15:3 (KJV)

The vision recorded in Revelation 15:3 is presented by the apostle John as the prelude to the outpouring of the seven bowls of God’s wrath, which follow in the next chapter. The singers are those who have overcome the beast, its image, its mark, and the number of its name, and they raise a hymn that combines two historic songs of deliverance.

The “song of Moses” recalls the celebratory hymn the Israelites sang after their deliverance from Egypt (Exodus 15:1‑21). By invoking Moses, the worshippers link their present triumph over evil with the ancient act of God’s saving power. The “song of the Lamb” turns the focus to Jesus Christ, repeatedly called the Lamb of God throughout Revelation (see Rev 5:6‑14). This dual reference underscores that the victory belongs both to the covenant‑keeping God of the Old Testament and to the redeemed Messiah of the New Testament.

The proclamation “Great and marvellous are thy works” praises the mighty deeds of God throughout history. It emphasizes His power, sovereignty, and the awe‑inspiring nature of His actions, reminding believers of His faithfulness and the fulfillment of His promises. While the KJV text includes the additional phrases “just and true are thy ways, thou King of saints,” some modern translations omit these words. The former wording affirms the righteousness, perfect judgment, and moral integrity of God’s ways, and it declares His lordship over the saints—those who are called holy. The latter observation notes that, although these expressions are not present in every textual tradition, the broader biblical narrative consistently affirms God’s justice and His reign over believers.

Overall, Revelation 15:3 captures the worship of those who have triumphed over evil through faith in Jesus Christ. It magnifies God’s magnificent works, His just and true ways, and His sovereign authority as the Almighty Lord and King of saints, while also pointing believers to the continuity of divine deliverance from Moses to the Lamb.