Revelation 18 tells us of the fall of another Babylon, related by history and again intercourse with the Babylon of chapter 17. That was the Babylon of Religion, this is in chapter 18 is the Babylon of Commerce. So we have two Babylons, the Mother of Harlots and the Mother of Money, the great global economic system of the latter days. When the religious system collapses, it begins the domino effect of collapsing the Beast’s entire empire. He is desperate and now motivated and empowered by Satan, he moves against Jerusalem, that once thought he was their Messiah.

Warren Wiersbe points out four voices in this chapter.

The Voice of Judgment Revelation 18:1–3

And after these things I saw another angel come down from heaven, having great power; and the earth was lightened with his glory. And he cried mightily with a strong voice, saying, Babylon the great is fallen, is fallen, and is become the habitation of devils, and the hold of every foul spirit, and a cage of every unclean and hateful bird.

The Voice of Separation Revelation 18:4

And I heard another voice from heaven, saying, Come out of her, my people, that ye be not partakers of her sins, and that ye receive not of her plagues.

The Voice of Mourning Revelation 18:9-10

And the kings of the earth, who have committed fornication and lived deliciously with her,
shall bewail her, and lament for her, when they shall see the smoke of her burning, Standing afar off for the fear of her torment, saying, Alas, alas, that great city Babylon, that mighty city! for in one hour is thy judgment come.
But the last voice we hear is the important one, for it returns us after all this darkness and destruction to rejoicing.

The Voice of Rejoicing Revelation 18:20
Rejoice over her, thou heaven, and ye holy apostles and prophets; for God hath avenged you on her.

Conclusion:  

Two lessons we take with us from the Two Babylons
Number one, God hates Jezebel, God despises Babylon the Mother of Harlots that has claimed billions of souls and doomed them when their creator would have saved them.

God hates Jezebel and therefore we must not tolerate her in our churches, our live or our families. Yes we must be intolerate in this, not unloving, not unconcerned but not ever tolerate of the corruption and evil of the mother of Harlots drunk on the blood of the saints.

Just as the voice from heaven says in Revelation 18:4-6 Come out of her, my people, that ye be not partakers of her sins, and that ye receive not of her plagues. For her sins have reached unto heaven, and God hath remembered her iniquities. Reward her even as she rewarded you, and double unto her double according to her works: in the cup which she hath filled fill.

Number two, for God’s people there will always be a voice of rejoicing at the end of the darkest night and the most oppressive struggles. Listen for that voice at all times.

Remember what Paul wrote to the church at Philippi? Philippians 4:4 Rejoice in the Lord alway: and again I say, Rejoice.

This is what we are called to do until that last great voice from heaven calls out that final command to rejoice. You can’t ignore the difficulties, the darkness and the desolation but don’t ever forget we are called to always rejoice.