The Romish religion is dangerous because though it espouses many of the tenets of the Christian faith, it adds doctrines and practices contrary to holy Scripture. Not to mention, because it claims to be 'Christian', the world is duped by it's false profession out of it's ignorance to what Scripture teaches. The counterfeit is far more dangerous then the obvious opposite.
Romanism is the greatest weapon in his arsenal to counter true biblical Christian faith.
"Romish"- great word! Sounds like Ian Paisely!