Just as God's love entered the world, thereby submitting to the misunderstanding and ambiguity that characterize everything worldly, so also Christian love does not exist anywhere but in the worldly, in an infinite variety of concrete worldly action, and subject to misunderstanding and condemnation. Every attempt to portray a Christianity of 'pure' love purged of worldly 'impurities' is a false purism and perfectionism that scorns God's becoming human and falls prey to the fate of all ideologies. God was not too pure to enter the world.
Dietrich Bonhoeffer, Ethics
theology