"In matters of religion, it is very easy to deceive a man and very hard to undeceive him."

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The only man who has the right to say that he is justified by grace alone is the man who has left all to follow Christ. Such a man knows that the call to discipleship is a gift of grace, and that the call is inseparable from the grace. But those who try to use this grace as a dispensation from following Christ are simply deceiving themselves.

— Dietrich Bonhoeffer