How do we know the victory of Christ over Satan is true?

Scripture provides assurance of Christ's victory over Satan, most notably illustrated in Revelation 20, where it describes the angel coming down from heaven to bind Satan for a thousand years. This binding symbolizes Christ's authoritative victory achieved at Calvary, where He triumphed over sin, death, and the devil. Moreover, believers hold to the promise that Satan will ultimately be cast into the lake of fire, signifying a complete and irreversible defeat. The theological perspective here emphasizes that Christ’s victory not only secures redemption for the elect but also guarantees the final judgment of evil. As the Scriptures teach, God is sovereign, and His plans cannot be thwarted, giving us confidence in the ultimate outcome of history.