How do we know Jesus' work of redemption is complete?

In John 19:30, Jesus proclaimed, 'It is finished,' which signifies that the redemptive work He undertook on behalf of His elect was fully completed. This work involved not just His physical suffering but also the fulfillment of the Law's demands and the satisfaction of divine justice. Romans 4:25 states that He was delivered for our offenses and raised again for our justification, affirming that His resurrection validates the success of His redemptive work. Believers can rest assured in the finished work of Christ, knowing that He will never again suffer for sin.