1 And I saw another sign in heaven, great and marvellous, seven angels having the seven last plagues; for in them is filled up the wrath of God.
These "plagues" will be poured out like a splash onto the world. A trump will sound and a seal is broken, then it will be poured. 111, 222, 333, etc. This is why we know satan enters at the 6th trump, 6th seal, 6th bowl = 666. It's one event. A simultaneous event.
2 And I saw as it were a sea of glass mingled with fire: and them that had gotten the victory over the beast, and over his image, and over his mark, and over the number of his name, stand on the sea of glass, having the harps of God.
"Sea of glass" = those overcomers. The ones that stood against satan when everyone else chased after him.
3 And they sing the song of Moses the servant of God, and the song of the Lamb, saying, Great and marvellous are thy works, Lord God Almighty; just and true are thy ways, thou King of saints.
Deuteronomy 32, the words are of how they accomplished victory over satan. Those that followed Truth are always blessed.
4 Who shall not fear thee, O Lord, and glorify thy name? for thou only art holy: for all nations shall come and worship before thee; for thy judgments are made manifest.
It's all in the open and things put right.
5 And after that I looked, and, behold, the temple of the tabernacle of the testimony in heaven was opened:
"Tabernacle of the testimony" = "The tabernacle of the congregation". Everyone from the beginning until the end of the second age. All souls!
6 And the seven angels came out of the temple, having the seven plagues, clothed in pure and white linen, and having their breasts girded with golden girdles.
7 And one of the four beasts gave unto the seven angels seven golden vials full of the wrath of God, who liveth for ever and ever.
"Four Beasts" = living creatures around the throne. These wrath's are going to come down hard on those that refuse The Truth of God.
8 And the temple was filled with smoke from the glory of God, and from his power; and no man was able to enter into the temple, till the seven plagues of the seven angels were fulfilled.
The glory of God is illuminating the temple.