I thought I knew what "non-denominational" meant, but then I read:
The Philadelphia Church of God is non-denominational... (source)Huh?
The PCG is one of the most rigorous Christian sects around. Shattered families, control-freak ministers. It's not in vogue to call groups like these "cults" any more, but that's pretty much what they are.
The Oxford dictionary defines non-denominational as "open or acceptable to people of any Christian denomination..." PCG hardly fits the bill. They openly reject all other denominations and exalt exclusivity.
Perhaps they just can't help indulging in double-speak. Perhaps they don't know what the word means. Perhaps they're just flat out misrepresenting themselves. Regardless, this claim is a sick joke.