How do we know that Christ is the fulfillment of God's promises?

The sermon emphasizes that Christ, referred to as the last Adam, fulfills all that the first Adam failed to accomplish. In Romans 9:11-13, Paul highlights God's sovereign choice in favoring Jacob over Esau, illustrating the principle that God often chooses the second to fulfill His purposes. This is further seen in Christ’s role as the second bullock used to signify the perfection and completeness in our salvation. He is the altar and the sacrifice, embodying God's fulfillment of His covenant promises.