After chapter 3 in Revelation, the Christian church is never mentioned again. The saints are seen in heaven....but not here on earth. The Church age will be over when the rapture happens.
The man of lawlessness is one of the names given to some future world leader who leads a many nation coalition... aka antichrist.
The Harlot and False Prophet is the apostate end-time one-world church. Probably a conglomerate of a little of apostate christianity, islam, buddahism etc.
Babylon the Great is a commercial / religious entity .
The above is the view of most evangelicals.