Christ’s work is finished because He declared it so on the cross and His resurrection confirms the completion of His redemptive mission.
The completion of Christ's work is affirmed in His statement 'It is finished' from John 19:30. This proclamation declares that the full payment for the sins of His people has been made. In John 17:4, Jesus acknowledges that He has finished the work the Father gave Him to do. His resurrection acts as the divine seal that affirms His victory over sin and death, confirming that His sacrifice was sufficient. The assurance of this finished work gives believers confidence in their salvation, knowing that justification before God is fully accomplished in Christ.
Scripture References:
John 19:30, John 17:4, Isaiah 53:11, Romans 8:33-34, Titus 1:15-16, 1 John 3:1-9
Commentary