How do we know that Christ's victory over sin is true?

The narrative of Christ's victory over sin is woven throughout the Bible, with significant emphasis placed upon His death and resurrection as the ultimate defeat of sin and death. In John 12:31, Jesus declares, 'Now is the judgment of this world. Now shall the prince of this world be cast out.' This statement reinforces the belief that through His crucifixion, Jesus decisively overcame the powers of sin and death. Additionally, the resurrection serves as the ultimate confirmation of His victory, providing believers with the hope of eternal life. The scriptural testimony serves as a foundation from which we affirm that His victory is indeed true and accomplished for His people.