There in lies the real genius of Christianity, which is that it admonishes you to live an exemplar life while simulataneously telling you that it's impossible, so if you fall short of the goal, you can still sleep at night. It also seems to instill its followers with the arrogance to speak down to others in a condescending tone for not living up to the same ideals they fail to live up to themselves.
Even if the open windows of science at first make us shiver after the cozy indoor warmth of traditional humanizing myths, in the end the fresh air brings vigor, and the great spaces have a splendor of their own - Bertrand Russell