How do we know the Gospel is rooted in Christ?

The Gospel is fundamentally rooted in the person of Jesus Christ, as articulated by the Apostle Paul in Romans 1:1-4, where he distinguishes the Gospel as concerning God's Son. Without Christ, there is no complete Gospel, as true salvation must include the mediator between God and man. The absence of Jesus Christ in narratives like the Prodigal Son highlights that they cannot encapsulate the entirety of the Gospel message, which conveys the necessity of Christ's atoning sacrifice for reconciliation with God. This underscores the importance of a Christ-centered faith for genuine salvation and redemption from sin.