Why is the concept of Jesus as both God and man important for Christians?

The importance of Jesus being both God and man lies in the necessity of genuine representation for the sake of salvation. As indicated in Romans 8:3, the law, which we as sinners are unable to fulfill, required a perfect sacrifice. By taking on human flesh, Jesus fulfills the law perfectly in our place. His dual nature means that He experiences human suffering and temptation while remaining sinless, thus qualifying Him to be our perfect substitute.

Moreover, His divinity guarantees the infinite value of His atoning sacrifice. As stated in Acts 20:28, He purchased the church with His own blood, affirming that only God could effectuate such a powerful redemption. Consequently, Jesus’ two natures allow believers to approach Him with confidence, knowing that He understands our plight while also possessing the authority to save. This duality lays the foundation for the believer's relationship with God—providing both assurance and hope of eternal life through faith in Christ alone.