How do we know Christ's work fulfills Old Testament prophecies?

Throughout the Gospel of Matthew, specifically in Matthew 4:12-16, we see Jesus moving to fulfill prophecies spoken by Isaiah. The verse notes that He dwelt in Capernaum to fulfill what was said about the land of Zebulun and Nephthulum, symbolizing that His coming was not random, but ordained by God. The fulfillment of prophecies demonstrates that everything Jesus did was decreed by God and according to His eternal purpose, as seen in 1 Corinthians 15:3-4, which highlights His death and resurrection as being in accordance with the Scriptures.