By no means is the Roman Catholic Church the only institution which has persecuted Bible-believing Christians, but no other institution has persecuted more aggressively or for a longer period of time. We believe the Roman Catholic Church is the partial fulfillment of the prophecy in Revelation 17 of a one-world religious harlot. This is not to say that Revelation 17 is entirely fulfilled by Roman Catholicism. This prophecy will not be completed until the reign of the Antichrist just prior to the coming of the Lord, and Rome will be joined by a conglomeration of other apostate churches and organizations, the end result, no doubt, of the present ecumenical movement. - p. 8.