How do we know that justification is completed in Christ?

In the sovereign grace perspective, justification is viewed as a completed work accomplished through the sacrifice of Christ. The sermon emphasizes that believers are fully justified in the eyes of God, as seen in Romans 5:1, which declares that we have peace with God through our Lord Jesus Christ. This means that our acceptance before God is not based on our works but solely on the finished work of Christ, who took on our sins and provided His righteousness to us. As God declares His elect justified, they are made perfect forever, and nothing can be added to this justification since it is solely based upon faith in Christ's atonement.