How do we know that we are justified by faith?

Romans 5:1 affirms that we are justified by faith, leading to peace with God through our Lord Jesus Christ. This doctrine is essential to Reformed theology, as it highlights that justification is not based on our works but on the grace of God manifested in Christ's atoning blood. By faith, we believe that Christ fulfilled the law on our behalf, which ensures that our justification is a gift from God, as outlined in Ephesians 2:8-9. All boasting in personal merit is excluded; as believers, we can assert that our faith rests solely on what Christ has accomplished.