How do we know Jesus Christ completed our redemption?

The certainty of Christ's completed redemption is affirmed in Scripture, notably by His statement on the cross, 'It is finished' (John 19:30). This proclamation signifies that every requirement of God's holy justice regarding sin was met through Christ's sacrificial death. He bore the sins of His people completely and effectively. Additionally, the resurrection of Jesus serves as a divine confirmation that His atoning work was acceptable and successful, further assuring believers of their secure position in Him. Thus, faith in Jesus rests upon the finished work that guarantees salvation and eternal life for all who believe.