Church(ish)

The story is too familiar. You visit a church and everyone is nice, but no one seems to truly care. The people wear masks of righteousness only to, after you have committed yourself, remove those masks to reveal the face of a horrid witch-like creature. Or, perhaps, a different mask is worn: a mask that looks beautiful so that it hides the fact that the people are not worshipping or teaching about a real god; only some god that is created by human hands from tradition or from the popular religious myths of our day or a day in the distant past.
Why should I burn my mask and expose my cross?