We need to study the pouring out of the seventh vial. The powers of evil will not yield up the conflict without a struggle.87SDA Bible Commentary 7:983.
In the midst of the angry heavens is one clear space of indescribable glory, whence comes the voice of God like the sound of many waters, saying: “It is done.” Revelation 16:17.
That voice shakes the heavens and the earth. There is a mighty earthquake, “such as was not since men were upon the earth, so mighty an earthquake, and so great.” Verses 17-18. The firmament appears to open and shut. The glory from the throne of God seems flashing through. The mountains shake like a reed in the wind, and ragged rocks are scattered on every side. There is a roar as of a coming tempest. The sea is lashed into fury. There is heard the shriek of a hurricane like the voice of demons upon a mission of destruction. The whole earth heaves and swells like the waves of the sea. Its surface is breaking up. Its very foundations seem to be giving away. Mountain chains are sinking. Inhabited islands disappear. The seaports that have become like Sodom for wickedness are swallowed up by the angry waters. Babylon the great has come in remembrance before God, “to give unto her the cup of the wine of the fierceness of his wrath.” Great hailstones, every one “about the weight of a talent,” are doing their work of destruction. Verses 19, 21. The proudest cities of the earth are laid low. The lordly palaces, upon which the world's great men have lavished their wealth in order to glorify themselves, are crumbling to ruin before their eyes. Prison walls are rent asunder, and God's people, who have been held in bondage for their faith, are set free.88The Great Controversy, 636-637. Mar 280
Our great need is itself an argument and pleads most eloquently in our behalf. But the Lord is to be sought unto to do these things for us. He says, “Ask, and it shall be given you.” And “He that spared not His own Son, but delivered Him up for us all, how shall He not with Him also freely give us all things?” Matthew 7:7; Romans 8:32. SC 95
And the seventh angel
poured out his vial into the air; and there came a great voice out of
the temple of heaven, from the throne, saying, It is done. And there
were voices, and thunders, and lightnings; and there was a great
earthquake, such as was not since men were upon the earth, so mighty an
earthquake, and so great. Revelation 16:17-18. KJV