“The secret police greatly persecuted the underground church, because they recognized in it the only effective resistance left. It was just the kind of resistance (a spiritual resistance) which, if left unhindered, would undermine their atheistic power. They recognized, as only the devil can, an immediate threat to them. They knew if a man believed in Christ he would never be a mindless, willing subject. They knew they could imprison the physical body, but they couldn't imprison a person's spirit -- their faith in God. And so they fought very hard.”