Tim Keller in The Reason for God:
The God of Jesus and the prophets...saves completely by grace. He cannot be manipulated by religious and moral performance - he can only be reached through repentance, through the giving up of power. If we are saved by sheer grace, we can only become grateful, willing servants of God and of everyone around us...In Jesus' and the prophets' critique, self-righteous religion is always marked by insensitivity to issues of social justice, while true faith is marked by profound concern for the poor and marginalized...
What is the answer, then, to the very fair and devastating criticisms of the record of the Christian church? The answer is not to abandon the Christian faith, because that would leave us with neither the standards nor the resources to make correction. Instead we should move to a fuller and deeper grasp of what Christianity is.
Push out into the deep. Embrace Jesus.