How do we know Jesus is the fulfillment of the Old Testament promises?

Throughout the Old Testament, numerous prophecies point toward a coming Savior who would redeem God's people. From the promises made to Abraham and Isaac to Jacob's declaration that the scepter would not depart from Judah, every detail leads to the expectation of Christ. New Testament writers, particularly Paul and the author of Hebrews, affirm that Jesus is the fulfillment of these promises. In Luke 2, we see Simeon recognizing Jesus as the one who brings salvation to the Gentiles and glory to Israel. This fulfillment speaks to God’s faithful commitment to His covenantal promises, as seen in scripture like 2 Corinthians 1:20, stating that all the promises of God find their 'yes' in Christ.