The main condition for justification according to Paul is

According to Paul, the main condition for justification is faith in Christ's redemptive work. Paul taught that salvation is a gift of God's grace, which cannot be earned or deserved by human merit or ability to keep the law. It is through faith in Jesus Christ that one can receive this gift of salvation and be justified in God's sight. This means that God declares a sinner righteous because of their faith in Jesus Christ, and not because of any works or merit they have done. Therefore, faith in Christ's redemptive work is the main condition for justification according to Paul.