What does the Bible say about salvation being finished?

The concept that salvation is finished is emphasized significantly in the scriptures, particularly in John 19:30, where Jesus proclaims, 'It is finished.' This declaration underscores the belief that the atoning work of Christ on the cross is complete and sufficient for salvation. In Isaiah 45, it is illustrated that God is fully satisfied with the work that Christ has done on behalf of His people, declaring that there is nothing more required for our salvation. The gospel message emphasizes that we are saved by grace through faith, and not by our works or efforts, reinforcing the idea that all is accomplished in Christ alone, which the historic Reformed faith deeply affirms.