Paul’s gospel is not really one of justification, but of reconciliation. Humanity, because of its sin, exists in a state of rebellion and enmity with God. Despite our best efforts to improve ourselves we find we cannot. Because our problem is not just sinful behavior but really hatred and mistrust towards God, the solution for our problem is not just legal justification but reconciliation. God demonstrates his love for us despite our rebellion. We respond in loving faith and are empowered by the Holy Spirit to love and trust God, to no longer want to rebel.