Until now the world had always granted them (Christians) a lodging-place by allowing them to work for their own food and clothing. But a world that has become one hundred per cent anti-Christian cannot allow this private sphere of work for their daily bread. The Christians are now forced to deny their Lord for every crumb of bread they need. Either they must flee from the world, or go to prison; there is no other alternative. When the Christian community  has been deprived of its last inch of space on the earth, the end is near.

Dietrich BonhoefferThe Cost of Discipleship1961 edition, 299-300.