This is the third reflection in our January series. After celebrating Christmas and stepping into a new year, we have been returning to one central truth: God has entered our darkness, and that arrival is the beginning of real transformation. Last week we reflected on Baptism and the new identity it gives. Holiness is not mainly a self-improvement project; it is belonging. It is surrendering to God and letting Christ’s light live in us. This week that same light asks for something further. It does not only comfort; it purifies. It does not only inspire; it heals.

The Church has never treated Isaiah’s words as only a message to an ancient city. In the liturgy, “Jerusalem” becomes an image of God’s people- what the Catechism calls the Church: gathered by the Father, united to Christ, and made a living temple by the Holy Spirit. And the “glory of the LORD” does not shine like a harsh spotlight in a film noir interrogation scene. It is the radiant presence of God who draws near not to condemn but to save. God’s revelation, as the Church teaches, is meant to bring us into communion with Him. It is not merely information about God; it is a living, effective work of grace. When Isaiah announces, “Your light has come,” Christians recognize Jesus Christ, true Light from true Light. Now that we have moved into Ordinary Time, the Christmas mystery presses forward into discipleship: allowing that Light not only to warm us, but to search us, purify us, and reorder our hearts from within.

This is also why Isaiah 60 resonates so strongly with the Church’s teaching on evangelization. The Church does not evangelize by marketing an idea, but by bearing witness to a Person who is already shining upon the world. Pope St. Paul VI insisted that the Church exists to evangelize, and that the Gospel must reach real human life- families, cultures, workplaces, and the hidden corners where people carry joy, shame, and sorrow. Light is meant to be seen. The Church’s mission is not to hoard the light but to carry it. Yet Isaiah’s command to “rise” is not first about public projects or outward activity; it begins in the heart. A Christian community becomes light for others only to the extent that it allows Christ to cleanse what dims its witness: resentment, division, secret sin, indifference toward the poor, and the quiet despair that whispers, “I’ll never change.”

Here is the uncomfortable mercy of light: it reveals. Sometimes that feels like stepping into a bright room when our eyes are used to the dark. But Christ does not expose us to shame us; He reveals so He can heal. That is why the Church speaks so insistently about repentance and the Sacrament of Reconciliation. Confession is not spiritual punishment; it is a place where the Light meets us with truth and tenderness, where the Lamb of God takes away sin and restores freedom. Real change often begins with honest naming: where am I stuck, what habit is draining my soul, what relationship needs repair, what wound have I kept from the Lord?

Carry Isaiah’s verse as a question this week. What is God’s light revealing in you right now? Something to thank Him for, or something needing conversion? Why is it hard at times to believe mercy is freeing? What is one practical step toward healing you can take today? Each evening, make a brief examen: where did you notice God’s light, and where did you step back into darkness? Then choose one concrete step. The Light of Christ is not fragile. It is strong enough to heal, and gentle enough to lead you there.