The river whose streams gladden the city of God

On Saturday of the Twenty-Fifth Week in Ordinary Time our Church invites us to first read and reflect on a passage from the book of the prophet Ezekiel (47: 1-12) entitled "The vision of the water flowing from the temple". Our treasure, which follows, is from a discourse on the psalms by Saint Hilary, bishop. Saint Hilary (c. 315–367) was a bishop of Poitiers in present-day France and one of the great defenders of the Christian faith during the fourth-century Arian controversy. He is best known for defending the full divinity of Jesus Christ and the Church's teaching on the Trinity, especially in his major work On the Trinity. He understood that what Christians believe about Christ matters profoundly for salvation. Saint Hilary therefore teaches Christians to know their faith deeply, remain faithful when truth is unpopular or costly, and allow belief in Christ to lead to worship, holiness, and a transformed life. On the Trinity is the great twelve-book theological directed primarily to Christians, bishops, and teachers struggling with the Arian controversy, which denied or weakened the full divinity of Jesus Christ. Drawing heavily upon Scripture, Saint Hilary teaches Catholics today that the Trinity is not an abstract theological puzzle but the mystery at the heart of Christian life and salvation. Ezekiel was an Old Testament priest and prophet who ministered among the Jewish exiles in Babylon during the sixth century BC, beginning around 593 BC, after many people of Judah had been deported from Jerusalem. The central teaching of the Book of Ezekiel is that God is holy, each person is responsible for responding to Him with repentance and obedience, and God desires not the sinner's destruction but conversion and new life. God does not merely repair our external circumstances; He desires to transform us from within, replacing hearts hardened by sin with hearts capable of knowing, loving, and faithfully following Him. Taken together, today's two readings teach that God is the source of the divine life that heals, renews, and transforms His people, and that this life is meant to flow outward and bear abundant fruit. In our first reading, Ezekiel's vision about life-giving water flowing from the Temple, becoming deeper as it travels and bringing healing and fruitfulness wherever it goes—a prophetic image of God restoring His people and dwelling among them; in our "treasure" from his Discourse on the Psalms, saint Hilary interprets the "river whose streams gladden the city of God" as the grace of the Holy Spirit flowing from Christ and giving life to His Church. Together these readings teach that God does not merely call us to receive His grace but to be transformed by it: the divine life flowing from Christ through the Holy Spirit heals what sin has damaged, makes us spiritually fruitful, and enables God's life and love to flow through us for the renewal of others and the building up of His Church.