How do we know Christ is at the center of salvation?

In Ephesians 1:9-10, Paul emphasizes that the mystery of God's will is to gather all things together in Christ. This means that Christ is not only the means of salvation but the very foundation upon which all spiritual blessings rest. The fulfillment of God's plan for salvation finds its culmination in the person and work of Jesus. The Old Testament foreshadows Christ through types and shadows, demonstrating that the entire narrative of Scripture points to Him as the Savior. Understanding that salvation is fully in Christ is a profound mystery revealed by God to His elect.