Why is it important for Christians to believe that Jesus is God?

For Christians, the belief that Jesus is God is essential to their faith, as it confirms His identity as the God-man, who fulfills the prophecies made throughout the Old Testament. This belief shapes the understanding of Jesus as the prophet, priest, and king, the only mediator between God and man. Isaiah 25:9 states that the Lord will save us, identifying Jesus as that Lord. Acknowledging Jesus as God manifested in the flesh is therefore vital for comprehending the nature of salvation and the work of Christ in redemptive history.