Right Response to a Holy God
Right Response To A Holy God
Isaiah 6:5–7 and the transforming mercy of God
When we truly encounter the holiness of God, our first response is not casual comfort but deep conviction that leads to cleansing and a transformed life of obedience.
A Community Shaped By God’s Holiness
At The Lighthouse Centre in Brussels, we exist to shine God’s light in a diverse city, welcoming all nations to experience His love, be transformed by the Gospel of Jesus Christ, and grow as disciples. Our vision is to promote the Gospel “in all ways possible” so that real transformation happens—hearts restored, lives changed, and hope renewed. This sermon, “Right Response To A Holy God,” speaks directly into that vision by showing how Isaiah’s encounter with God’s holiness becomes a pattern for our own walk with Christ.
When A Holy God Draws Near
In Isaiah 6, the prophet receives a vision of the Lord “seated on a throne, high and exalted,” and the train of His robe fills the temple. In that overwhelming moment, Isaiah does not feel proud or entitled; he is undone. He cries, “Woe is me, for I am undone, because I am a man of unclean lips, and I dwell in the midst of a people of unclean lips.”
The sermon reminds us that Isaiah was not a random bystander. He was highly educated, from a wealthy family in Jerusalem, with access to the royal court and influence over several kings. Yet standing before the holy God strips him of status and self-confidence. God’s glory exposes his frailty, his sin, and his deep need. In crisis—when kings die, empires rise, and nations panic—God reveals that He is still on the throne, fully in control, never losing hold of His people.
Conviction: The State Of Our Hearts
The first major theme is conviction—seeing the true state of our hearts in light of God’s holiness.
Isaiah’s “woe is me” is more than a poetic phrase; it is an expression of grief and great distress before a holy God. The sermon explains that we often underestimate the weight of such words in an age of slang and casual language. But when Isaiah says he is “undone,” he means ruined, broken, and unable to stand in himself.
To help us feel this, the message uses simple, everyday examples: how we respond to danger or strange situations—panic, fear, hiding; how children respond differently to the same father—one fearful, one carefree; how our reactions in crowded workplaces, busy restaurants, or tense streets reveal what is really inside us. In the same way, encountering God’s presence reveals what lies deep in our hearts. God’s holiness does not flatter us; it exposes our weakness, fragility, and uncleanness.
The words that come out of our mouths are a mirror of what fills our hearts, echoing Luke 6:45: “For the mouth speaks what the heart is full of.” Conviction here is not condemnation without hope. In the courtroom of heaven, to be convicted—to be aware of our guilt—is actually a sign that the Holy Spirit is at work. Our fallen nature does not naturally admit its sinfulness; when we sense that something is wrong in our attitudes, relationships, or habits, it is God’s mercy drawing us to repentance rather than letting us stay blind.
Cleansing: God’s Merciful Initiative
The second theme is cleansing—God’s gracious work to purify those who are convicted.
Isaiah does not clean himself. In the vision, a seraphim flies to him with a burning coal taken from the altar and touches his mouth, declaring, “Your iniquity is taken away, and your sin purged.” The altar, the coal, and the angel all point to God’s initiative: Isaiah is spared in the very presence that should consume him.
The sermon draws the line straight to the Gospel. Today, God does not send an angel with tongs and hot coal; He has sent His Son. Jesus lives a perfect life, suffers, and dies to take upon Himself the punishment that our sins deserve. God is both Judge and Justifier, satisfying His own justice so that those who trust in Christ can be forgiven and made righteous.
Cleansing, however, is not always comfortable. Just as a burning coal on the lips would be painful, allowing God to remove what we love but which harms us can be excruciating. The sermon names everyday areas where this can happen: relationships we hold onto even when they pull us away from God; friendships we justify despite the warning that “bad company corrupts good character”; lifestyles and speech patterns that feel normal but contradict Scripture.
Yet Scripture offers clear hope: “If we confess our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness” (1 John 1:9), and “How can a young man cleanse his way? By taking heed according to Your word” (Psalm 119:9). The path to cleansing is not self-improvement but humble confession, deep trust in Jesus’ finished work on the cross, and obedience to the Word of God.
From Conviction To Calling
Isaiah’s vision does not end with conviction and cleansing. After his sin is purged, he hears God ask, “Whom shall I send, and who will go for us?” Isaiah responds, “Here am I; send me.”
The sermon stresses that God does not coerce anyone into witnessing. His people, touched by His mercy, want to respond. They understand that the life they now have in Christ is no longer their own but belongs to the Lord. The message even challenges us to consider our choices: when faced with an evangelistic opportunity and a more comfortable alternative, which do we choose?
At The Lighthouse Centre, this calling is lived out in practical ways: a relational, relevant, and real community that seeks to reach the diverse Brussels context with evangelism and discipleship; Spirit-filled worship and preaching that aim to mature and inspire believers in their walk with God; home groups, volunteering, and ministries where ordinary members step into their “Here am I, send me” calling in everyday life.
As a church, we are reminded that the Gospel is not only about personal comfort but about laying down our lives so that others can encounter the same holy and merciful God. Our time, energy, responsibilities, and talents become offerings, not just possessions.
A Call To Repentance And Surrender
The sermon concludes with a sober yet hopeful invitation. Hell is described as a place where some cry out for mercy too late and others continue cursing God—a stark reminder that we cannot save ourselves and that eternity matters. But the message emphasizes that the very fact we feel conviction today is good news: it is God’s mercy giving us an opportunity to repent and receive His grace.
Members and viewers are invited to come to the altar as a sign of surrender and a repentant heart, not for a show but for genuine prayer. Those aware of sin are urged to seek God’s mercy now. Those serving in ministry are encouraged to come for strength and fresh anointing, recognizing that all true fruit comes from dependence on Him.
At The Lighthouse Centre, this is our heartbeat: to help people honestly assess the state of their being before God; to lead them to the cleansing power of Jesus’ cross; and to send them out, empowered by the Holy Spirit, to shine God’s light in Brussels and beyond.
If you are reading this and sense conviction—about your words, your priorities, or your relationship with God—today can be the day you respond rightly to a holy God: admit your need, trust in Jesus’ finished work, and say from the heart, “Here am I; send me.”