How do we know Christ is the fulfillment of the Old Testament?

Throughout the Old Testament, various types and representations point to Jesus Christ as the fulfillment of God's redemptive plan. In Luke 24, Jesus explained to the disciples how all the Scriptures testify concerning Him—indicating that every sacrificial system, including that of the Ark of the Covenant, ultimately pointed to Him. For instance, the Ark contained the law, showcasing mankind's inability to meet its demands, while Christ upholds the law perfectly and provides atonement for sinners. This connection emphasizes that the entire trajectory of the Old Testament finds its completion in Christ, the sacrificial lamb who bears the sins of the world and achieves perfect righteousness on behalf of His people.