In the words of Bonhoeffer's classic book Life Together,
The grace of the Gospel, which is so hard for the pious to understand, confronts us with the truth and says, ‘You are a sinner, a great, desperate sinner; now come, as the sinner that you are to God who loves you. You do not have to go on lying to yourself and others, as if you were without sin; you can dare to be a sinner.’