Our passage this Sunday explores the identity and mission of Christians as “Citizens of the Kingdom of Heaven,” grounded in Matthew 5:13-16. It begins by contrasting the perfect harmony of creation under God’s rule with the present tension between Heaven and earth brought about by sin. Matthew’s gospel underscores this divide between the Kingdom of Heaven and the kingdoms of men. Christians, by virtue of salvation, are not called to become salt and light—they are salt and light—marked by transformed hearts and supernatural obedience to God. This transformation sets them apart, making them unwelcome in the world but vital as ambassadors of Christ. Their lives are public testimonies to God’s glory, meant to preserve, redeem, and influence the world through their distinct identity and witness.

The local church is presented as an earthly embassy of the Kingdom of Heaven, existing to advance God’s cosmic rule wherever it is planted. Just as an embassy represents the priorities of its homeland, the church promotes God’s kingdom through preaching, sacraments, and discipline. Formal membership identifies citizens of this kingdom, while accountability structures preserve the integrity of the church’s witness. Equipped by the church, individual Christians are called to live holy lives, be good citizens, and boldly witness to the truth of the gospel. In doing so, they shine as lights in a dark world, with the ultimate aim that others would see their good works and glorify God.