What does it mean that Christ is both God and man?

The dual nature of Christ as both God and man is foundational to Christian theology. He is fully divine, as affirmed in John 1:14, stating that the Word became flesh, signifying His incarnation. This union of two natures is known as the hypostatic union, where Christ does not lose His divine essence while also becoming truly human. It is crucial for His mediatorial work, as only a being who is both God and man can bridge the gap between a holy God and sinful humanity. In His role as the God-man, He effectively sympathizes with our weaknesses, enacts divine justice, and provides atonement for our sins through His perfect sacrifice. This unique duality ensures that His work has infinite value and sufficiency to save His people.