Something I wrote a while back:
What shall we do that we might work the works of God? – that we might be saved? In a word, to be new before God, we must forget what we “do”, and as Lutheran theologian Norman Nagel says, “be willing to be nothing but given to.” For we must become like little children and be born from above, not below. Just as the completely unpretentious and unreflective infant freely receives his parent’s love and kindness, spontaneously erupting with smiles and squeals of acceptance, so it must be with us. Only in this way, through receptive trust alone, do we return to the Source of forgiveness, life and salvation. God has reconciled the world to Himself in Christ. He has done it all. Be reconciled to God! When you, broken in your sin, hear the comforting Word that Christ has forgiven you, cling to that Word and do not delay in coming to the feast.
This is the work of God, that you believe on Him whom He has sent.