Revelation 18:4-5

4 I then heard another voice from heaven saying, Come out from her, my people, so that you may not share in her sins, neither participate in her plagues.

During the 3 1/2 years of the Great Tribulation, the worlds economic and political systems will be failing miserably. During the end times there will be super high inflation, financial markets will all crash, money will be useless, there will be massive wars and societies will completely destruct. So what does our Lord do about it for His Bride? He removes us out of the Babylonian system. He doesn’t remove us from the world, He keeps us in Himself even while we are still in the world, John 17:15. During this time we will be fed by our Father, protected by Him, and we will receive clear clean water from our Lord, Revelation 12:14. The chosen of God will be standing by the glassy sea during all of this, sealed with the Holy Spirit. Jesus teaches us on the Sermon on the Mount to take no thought for our own lives, but to seek first the Kingdom of Heaven and our Fathers righteousness and everything else will be added unto us, Matthew 6:33! The time of the Great Tribulation is the perfect time for this Truth to be lived and realized through the chosen of God.

Babylon, the worlds economic system, includes false religion, governments, and business. Just look at the world today and you can clearly see the lies and deceit and love of money each of these entities have. So Babylon is just more than one fake church, it is the whole worldly system of doing things. 

5 For her iniquities (her crimes and transgressions) are piled up as high as heaven, and God has remembered her wickedness and [her] crimes [and calls them up for settlement]. 

Our Father is not pouring out His wrath on the world just because of one church. He is pouring out His wrath because of all of the earth’s wickedness. Babylon, the woman, effects and controls Catholics, Church of God, Church of Christ, Muslims, Buddhists, Assemblies of God, Baptists, businessmen, and non-believers. Babylon's evil is far greater than just one church.