How do we know that Jesus is central to the message of the Scriptures?

The Apostle John emphasizes that the entirety of Scripture is focused on revealing Jesus Christ. This perspective is captured in John 5:39, where Jesus tells the Pharisees that they search the Scriptures believing they have eternal life, yet it's those very Scriptures that testify about Him. The Book of Revelation, and indeed the entire Bible, is an unveiling of Christ and His work, aimed at showing His glory, sacrifice, and victory. Without this Christocentric lens, Scripture becomes a mere historical or literary text, lacking its vital spiritual significance.