The sermon continues an ongoing exposition of 1 Peter, arriving at the second of Peter's imperatives to the church: "be holy, for I am holy" (1 Peter 1:14-16). The preacher opens not in 1 Peter but in Isaiah 6:1-7, where Isaiah sees the Lord seated on his throne, surrounded by seraphim crying "Holy, holy, holy is the Lord of hosts," and is undone by the vision, crying "Woe is me... for I am a man of unclean lips," before a seraph touches his mouth with a coal from the altar and declares his guilt taken away and his sin atoned for. This scene frames the whole sermon's argument about what holiness actually means.

Having read both passages, the sermon corrects a common misunderstanding: holiness is not, in the first instance, synonymous with sinlessness or moral purity. The preacher notes that in Indonesian, "kudus" (holy) and "suci" (pure) are often conflated, but they carry different emphases. The proof is that the seraphim themselves — sinless, pure beings — still cover their faces and feet before the Lord and cry out his holiness; their own purity does not let them gaze upon him. Holiness, the sermon argues, is fundamentally about being set apart, distinct, "a class by himself" — God is holy because there is no other like him, no other Creator, no rival. From this, the sermon reasons to 1 Samuel 2:2, "there is none holy like the Lord," and to what it means for believers to be called holy: not primarily a claim to sinlessness, but a declaration that God has set them apart from the world as his own possession, drawn out of the world though sent back into it.

The sermon then works through several movements from 1 Peter 1:14-16. First, holiness is God's prior work: he is the one who calls, and 1 Peter 1:2 describes believers as those "sanctified by the Spirit" according to the Father's plan — sanctification precedes and grounds the command. Second, this calling makes believers children of God (v.14a, "as obedient children"), a radical transfer from children of darkness and disobedience into children of light, paralleling Paul's teaching that all who are led by the Spirit of God are sons of God. Third, holiness produces a changed way of seeing: those made holy now value God and his word differently, treating Scripture as more precious than gold and sweeter than honey, illustrated by a story of a man who sold a ring for $1,000 not realizing it was worth $5,000 — ignorance of true value determines how one responds to it. The preacher applies this through recent VBS (Vacation Bible School) ministry experience, describing the sacrificial labor of volunteers and contrasting the different mission field represented by children already churched versus those unfamiliar with the gospel.

Fourth, holiness means putting to death the passions that once ruled in ignorance (v.14b), which assumes an ongoing struggle rather than instant perfection. Here the sermon introduces the "already and not yet" tension: believers are already holy in status — fully, irrevocably, by God's declared work — yet not yet wholly holy in condition, since real sin remains in daily life. Holding both together, the preacher warns, guards against two opposite errors. Frustration occurs when a believer, forgetting the "not yet," concludes that ongoing sin proves they were never truly called or sanctified. Excuse-making occurs when a believer, forgetting the "already," treats remaining sin as acceptable because sanctification isn't finished. Against the second, the sermon appeals to 1 John's teaching that those born again do not continually practice sin, even though they still stumble; the difference is that a holy person mourns and repents rather than settling comfortably into sin, because sin is treason against oneself as one united to Christ.

Finally, the sermon returns to "as obedient children" as a call to a persistent, childlike trust in God's word — not the naivety that chases attractive but worthless toys, but the simple, wholehearted trust of a child who believes a parent's word without qualification, echoing Psalm 42's example of preaching truth to one's own soul rather than trusting feelings. The sermon closes by urging the congregation to walk the narrow road of obedience, relying on Christ's Spirit rather than self-effort, denying self and taking up the cross daily as the concrete shape of holy living.

Bible Verses Used

• 1 Peter 1:14-16: The sermon's main text — the second imperative in Peter's letter, "be holy, for I am holy," which structures the whole message.

• Isaiah 6:1-7: Opens the sermon to illustrate God's holiness (the seraphim's cry) and Isaiah's undone response, showing holiness as "set-apartness" rather than mere purity.

• 1 Peter 1:2: Cited to show sanctification by the Spirit precedes and grounds the call to holy living.

• 1 Samuel 2:2: Hannah's prayer that "there is none holy like the Lord" supports the definition of holiness as God's uniqueness.

• 1 John (general reference): Used to argue that those born again do not continually live in sin, even while still capable of falling into it.

• Psalm 42: Cited as a model of preaching truth to one's own soul rather than yielding to feelings, applied to trusting God's word above personal perception.