In a letter to Eberhard Bethge from Tegel Prison, April 30, 1944, Dietrich Bonhoeffer wrote:

You would be surprised, and perhaps even worried, by my theological thoughts and the conclusions that they lead to; and this is where I miss you most of all, because I don't know anyone else with whom I could so well discuss them to have my thinking clarified. What is bothering me incessantly is the question what Christianity really is, or indeed who Christ really is, for us today.

We are moving toward a completely religionless time; people as they are now simply cannot be religious anymore. Even those who honestly describe themselves as "religious" do not in the least act up to it, and so they presumably mean something quite different by "religious."