What role does the Holy Spirit play in justification?

The Holy Spirit plays a crucial role in the justification of believers by effecting spiritual life and enabling faith in Christ. According to Galatians 3:21, the law cannot give life, but the Holy Spirit grants spiritual life to those chosen by God. Upon receiving this life, believers are empowered to believe the gospel and thus are justified as stated in Romans 3:28. The Spirit also produces evidence of life through the fruits of faith, such as love and joy, which further affirm one's justification through Christ.