Maybe this will help, from the Joint Declaration on the Doctrine of Justification:
15.In faith we together hold the conviction that justification is the work of the triune God. The Father sent his Son into the world to save sinners. The foundation and presupposition of justification is the incarnation, death, and resurrection of Christ. Justification thus means that Christ himself is our righteousness, in which we share through the Holy Spirit in accord with the will of the Father. Together we confess: By grace alone, in faith in Christ’s saving work and not because of any merit on our part, we are accepted by God and receive the Holy Spirit, who renews our hearts while equipping and calling us to good works.[11]
16.All people are called by God to salvation in Christ. Through Christ alone are we justified, when we receive this salvation in faith. Faith is itself God’s gift through the Holy Spirit who works through word and sacrament in the community of believers and who, at the same time, leads believers into that renewal of life which God will bring to completion in eternal life.
17.We also share the conviction that the message of justification directs us in a special way towards the heart of the New Testament witness to God’s saving action in Christ: it tells us that as sinners our new life is solely due to the forgiving and renewing mercy that God imparts as a gift and we receive in faith, and never can merit in any way.
