What does the Bible say about the fulfillment of Scripture?

Throughout the New Testament, fulfillment is highlighted repeatedly as a demonstration of God's sovereignty and faithfulness. Jesus himself spoke of how everything written about Him in the Scriptures must be fulfilled, emphasizing that the events of His life and ministry were part of God's eternal purpose. This is clearly seen in passages like Matthew 1:21, where the birth of Jesus is tied to prophecy, demonstrating how God's Word is trustworthy and unfolds exactly as foretold. The intertwining of God's sovereignty with the actions of men illustrates that even their wicked decisions serve the greater plan of redemption, as seen in Acts 4:27-28, where Herod and Pontius Pilate conspired against Jesus according to God's predetermined plan.