How do we know that Jesus is fully God and fully man?

The doctrine of the dual nature of Christ is central to Christian theology, emphasizing that Jesus is fully God and fully man simultaneously. This is foundational for effective mediation, as Jesus, by taking on our human nature, represents humanity before God while simultaneously being fully divine. Psalm 63 reflects this truth when referencing Christ's prayer to His Father, acknowledging God as both His God and His Father. As seen in John 20:17, Jesus affirms this relationship, signifying His unique identity that allows Him to fulfill God's covenantal promise of salvation for His people. This duality ensures that the prophecies of Scripture concerning His redemptive work are fulfilled in Him alone.