Why is Jesus called God's man in the sermon?

The term 'God's man' signifies Jesus Christ's unique role as the Son of God manifested in flesh. In Deuteronomy 15, the idea of offering the firstlings and emphasizing males reflects God's specific design for salvation—the conception of a male savior who meets the requirements of God's law. This reiteration serves to point toward Christ's fulfillment of these typologies in his life, death, and resurrection. Every person, regardless of their background, will ultimately bow to Jesus, recognizing his authority as the one established by God's sovereign plan for humanity.