How do we know the Gospel emphasizes Christ?

From beginning to end, the Gospel aims to present Jesus Christ as the focal point of the message of salvation. Preachers are tasked with proclaiming Christ's life, death, and resurrection, as all the Scriptures testify to His work. Matthew, Mark, Luke, and John articulate how the Old Testament types and promises find their fulfillment in Christ. The revelation of God through Jesus is significant, as it shapes our understanding of grace, redemption, and the character of God Himself. Therefore, the authenticity of the Gospel rests upon the person and work of Jesus, reinforcing that it begins and culminates in Him.