In Revelation 15:1 John sees another great and marvelous sign, seven angels with the seven last plagues. They are the last plagues because God’s wrath has been completed. Revelation 15-16 alludes to the book of Exodus to describe God’s final wrath on the kingdom of the beast.
Although God’s wrath is often associated with Israel’s rebellion, the prophets associate God’s wrath to eschatological events. For example, in Zephaniah 1:15 the final judgment will be a day of wrath, distress, anguish, and ruin. On that day the Lord will sweep everything away like chaff (2:2) and make a sudden end to all who live on the earth (1:18).
The wrath of God has been completed or accomplished (aorist passive of τελέω). The wrath of God is mentioned in several key passages in the book. In Revelation 6:16-17 the great day of the wrath of the Lamb “has come” and in 11:18 God’s wrath came, judged the dead and rewarded God’s servants. Those who have worshiped the beast will drink the wine of God’s wrath (14:10) and the harvest of the earth was described as grapes in the “winepress of God’s fury” (14:19). The seven bowls introduced in 15:17 and describe in chapter 16 are called “bowls full of the wrath of God” and Babylon the Great will drink the wine of God’s wrath (16:19; 19:15).
After seeing the great and wondrous sign, John sees those who have been victorious over the beast worshiping the Lamb (Rev 15:2-4). This worship scene has elements from Revelation 4-5, now familiar scenes of heavenly worship. John sees worshipers with harps beside a sea of glass mingled with fire.
The worshipers are the ones who are conquered the beast, its image and the number of his name. Although the text does not say they have been killed, that they are worshiping in a heavenly seem implies they have refused to worship the image of the beast or take his number. Like the souls under the altar in Revelation 6:9-11 and the 144,000 in 14:1-5, they have been killed by the beast and are now worshiping the Lamb.
The song they are singing is identified as the “Song of Moses and the Song of the Lamb.” The Song of Moses is found in Exodus 15:1-18, Deuteronomy 31:30-32:43 and Psalm 90. The problem is the Song of Moses in Revelation 15 has no literary relationship between the song of Moses in the Old Testament. Perhaps what follows is only the Song of the Lamb and the reader is assumed to know what the song of Moses is.
The context of the original song is important: God rescued his people out of Egypt, he overcame the Egyptians and their gods. There are obvious connections between the following judgments and plagues in Exodus. God is working again to preserve his people by sending plagues on their enemies.
The seven angels are given “bowls filled with the wrath of God” (Rev 15:5-8). The angels come out of the open “the sanctuary of the tent.” This is another allusion to Exodus. The tent of meeting was the place where Moses spoke face to face with the Lord. Temples with open doors were considered a “bad sign” in the ancient world. David Aune lists several sources indicating a temple door opening by itself was a sign of God’s wrath (2:878). Like angels in Daniel, these angels are dressed in white with a gold sash.
When the four living creatures given these angels the bowls of God’s wrath, the whole sanctuary is filled with the smoke of the glory of God (15:8). This is another allusion to Exodus: when the ark was installed in the Tabernacle the tent was filled with a cloud, representing the glory of God (Exodus 40:34-35).