How do we know Jesus Christ is victorious?

The resurrection of Jesus Christ serves as historical proof that He was victorious over sin and death. God raised Him from the dead as a declaration that His sacrifice was sufficient to atone for our sins and that His cry, 'It is finished,' was indeed a complete and final statement regarding our redemption. According to Acts 1, the same Jesus who was resurrected will return, triumphantly gathering His people. This assurance of His victory brings us hope and confidence in our salvation.