Why is it important for Christians to believe Jesus is both God and man?

The belief that Jesus is both God and man is fundamental to the Christian faith, impacting our understanding of salvation. As God, He has the authority to forgive sins and redeem humanity, while His humanity enables Him to empathize with our struggles. In Colossians 1:13-14, it explains that redemption comes through His blood, emphasizing the necessity of His human sacrifice. Additionally, His identity as the God-man allows believers to partake in the divine nature, as expressed in 1 John 5:1-5. This dual nature underlines the assurance of salvation and the intimate relationship Christians have with God through Christ.