How do we know that Christ's coming was prophesied in the Old Testament?

The Old Testament contains numerous prophecies that clearly foretell the coming of Christ. Isaiah, in particular, prophesied about various aspects of Christ's life, including His birth and His sacrificial death. These prophecies were detailed and specific, indicating that the coming Messiah would not only save His people but also bring justice and righteousness. The fulfillment of these prophecies in the New Testament, especially in the Gospels, affirms their truth and the divine inspiration behind them, demonstrating God's sovereign plan for salvation throughout history.