📖 Doctrinal Preaching — Unit 7: Preaching the Holy Spirit

Day 1 — Who the Holy Spirit Is

Of all the doctrines, the Holy Spirit is the one most often felt and least often defined. So the preacher must begin where confusion begins: the Spirit is not an it, not a vague force or influence, but a divine Person — the third Person of the Trinity, fully God along with the Father and the Son. He is personal: He speaks, He teaches, He can be grieved, He has a will. Settle this first, because a hearer who thinks of the Spirit as electricity will try to use Him; a hearer who knows the Spirit is a Person will walk with Him.

(Doctrinal backbone for this unit — the person and work of the Spirit — corresponds to Systematic Theology Unit 4; point students there for the fuller treatment.)

Day 2 — What the Holy Spirit Does

The doctrine of the Spirit answers two questions, as the course’s own framework puts it: who is the Holy Spirit? and what is the work of the Holy Spirit? Day 1 answered the first. The work is best preached as a series of definite acts in the life of the believer, each one resting on its own text. That is the homiletical move: a doctrine that feels misty becomes preachable the moment it is broken into specific, texted works.

Day 3 — The Homiletical Move

Subject: the work of the Holy Spirit. Interrogative: “What does the Holy Spirit do in the believer?” Keyword: works. The keyword yields four points, each anchored to its own text:

Point (keyword: works)	Anchor text
1. He regenerates — gives new birth	Titus 3:5; John 3:5–6
2. He indwells — lives in the believer	1 Corinthians 6:19; Romans 8:9
3. He fills and empowers — for holiness and witness	Ephesians 5:18; Acts 1:8
4. He seals — guarantees our inheritance	Ephesians 1:13–14

Let each work be understood for what it is — four definite things the Spirit does, not four moods He puts us in.

1. He regenerates — He gives new birth (Titus 3:5; John 3:5–6). The first work is the one that makes a Christian a Christian. We are not born again by trying harder, nor by religion, nor by good blood; we are born of the Spirit. As a man is helpless to arrange his own first birth, so he is helpless to arrange his second; the wind blows where it wishes, and the new life is the Spirit’s gift, not the sinner’s achievement. Regeneration is not turning over a new leaf — it is receiving a new heart.

2. He indwells — He lives in the believer (1 Corinthians 6:19; Romans 8:9). Having given new life, the Spirit moves in to stay. This work is developed in full below, for it is the one we will preach as our example — God no longer dwelling in a temple of stone, but in the believer himself.

3. He fills and empowers — for holiness and witness (Ephesians 5:18; Acts 1:8). Regeneration happens once; filling is meant to happen again and again. “Be filled with the Spirit” is a command in the present tense — keep on being filled. The same disciples who fled at the cross stood up at Pentecost and could not be silenced, not because they had grown braver but because they had been filled. The believer is a vessel: emptied of self, he is filled for holiness within and for witness without. A Spirit-filled life is not a louder life; it is a life through which Christ is unmistakable. And when the Spirit fills a man, it can look from the outside like drunkenness — and Scripture knows it. When Hannah prayed in the temple, her lips moving without a sound, Eli took her for a drunken woman: “How long will you be drunk? Put away your wine” (1 Samuel 1:14). When the Spirit fell at Pentecost, the crowd mocked, “They are full of new wine,” and Peter had to answer that it was only the third hour of the day, far too early for that (Acts 2:13–15). And it is no accident that Paul sets the two side by side: “do not be drunk with wine, in which is dissipation, but be filled with the Spirit” (Ephesians 5:18). The resemblance is real — an overflow, a gladness that spills past ordinary reserve — but the origin is opposite. The one filling is poured in from a bottle and leaves a man less than himself; the other is poured in from God and makes him more than himself. Paul does not deny that a man longs to be filled; he only tells him what to be filled with.

4. He seals — He guarantees our inheritance (Ephesians 1:13–14). In the ancient world a king would write a letter, fold it, pour hot wax across the fold, and press his signet down into the wax. The letter was verified by the seal — the king’s own mark, proof it was truly his. When you trusted Christ, “you were sealed with the Holy Spirit of promise, who is the guarantee of our inheritance.” So what is the seal that proves you belong to God? Not a feeling. Not your performance. It is the Holy Spirit Himself, pressed down into a human life — and as wax takes the shape of the signet, the sealed believer slowly takes the shape of the One who sealed him.

Let me tell you when I learned what that seal looks like. Years ago I was standing in line at a hamburger place, thinking of nothing in particular, when the man next to me — a stranger, and we had traded only a word or two — turned and looked at me and said, “You’re a Christian, aren’t you?” I said yes. I asked him how he knew. He said, “I could see it in your face.” I have turned that moment over for years. I had said nothing. I had only been standing there. Was Christ in me that moment, so truly that I bore the mark of Him on my face — even for an instant — where a stranger could read it? Could that be the seal of the Spirit, surfacing for a moment in an ordinary face in an ordinary line? I believe it was. The wax had borne the signet all along; that day the light caught it, and another man saw whose I was before I ever said a word. That is what a seal is for. A seal no one can read seals nothing — but the Spirit’s seal is meant to show, until others can see Christ in us, sometimes even in our faces.

Day 4 — Developing a Point (E-A-I) and Illustrations

Point 2, “He indwells” (1 Corinthians 6:19), developed in full:

Day 5 — Craft Notes and Summary

Two cautions. Preach the Spirit toward Christ, not toward the self. Jesus said the Spirit “will testify of Me”; a sermon on the Spirit that ends in the hearer’s experience rather than in Christ has lost its compass. Guard both ditches. One ditch ignores the Spirit entirely; the other makes Him a spectacle. Preach Him as the Person who applies all of Christ’s work to the believer. Then arc to response: the indwelling Spirit is offered to everyone who trusts Christ, and the call is to walk in step with Him.

So Unit 7 ran the template again: who the Spirit is, the lean backbone (ST Unit 4), subject and interrogative and keyword, four texted works, one developed by E-A-I, and an arc to response. Unit 8 takes up salvation — the whole golden chain the Spirit applies.

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