Dodson, Gospel-Centered Discipleship (Rev. & Exp., 2022), ch. 9 — the discipleship group: repent of sin, rejoice in Christ, reproduce disciples.
repent of sinrejoice in Christreproduce discipleswhat · when · why
The one idea
We are being discipled constantly — by newsfeeds, podcasts, and friends. So choose your formation deliberately. The discipleship group is a small, simple group of 2–4 (same gender) who meet regularly to repent of sin, rejoice in Christ, and reproduce disciples. "God picks your community; you pick your friends."
"If we work together as a company, a unit, as peers under the Lord Jesus Christ, we are formidable."
— Dodson, ch. 9
Knowledge: the three movements
1. Repent of sin
We're in a spiritual war — world, flesh, and devil — and "lone soldiers are easily picked off." Repentance is knowing and fighting our sin. Know your sin by asking three questions:
What? What sins are you currently tempted by? Name them; confess them. "An unknown or unacknowledged opponent is impossible to defeat."
When? When are you most vulnerable? Late-night screens? Traffic? Success? Pride? Know the circumstances and be prepared.
Why? "The why question gets below sin to the heart" — the lie beneath the sin, "the sin under the sin." Vanity believes "perform beautifully, and you'll have worth." Lust believes "find intimacy online, and you won't be lonely." Anger believes "if I don't get my way, I have the right to get angry." The desires are good; they're just directed to the wrong place.
2. Rejoice in Christ
Jesus is better — but how? Three ways to uncover it:
Attributes of Jesus. Self-pity says "no one cares" — but Christ is our advocate (1 John 2:1), eternally interceding (Heb. 7:25). Exhausted? Jesus is our rest (Matt. 11:28).
Gospel metaphors. Gossip seeks acceptance — but justification offers perfect acceptance before a holy God. Longing for a new start? New creation (2 Cor. 5:17). Longing for intimacy? Union with Christ. "Invite one another to claim a specific gospel metaphor that displaces the power of sin."
The promises of God. Compare sin's promise to Scripture's promise. Lust says: "Act on your urges, and you'll be satisfied." Scripture says: "Blessed are the pure in heart, for they shall see God" (Matt. 5:8). Vanity says: "Perform beautifully, and you'll have worth." Scripture says: "When he appears we shall be like him, for we shall see him as he is" (1 John 3:2). Write a sin-promise next to a gospel-promise — the contrast reveals the glory of Christ.
3. Reproduce disciples
Joy in Christ isn't meant to be kept under lock and key (C. S. Lewis: "The delight is incomplete until it is expressed"). Reproduce by adding (a third or fourth person), multiplying (challenging group members to start new groups), or subtracting (following Matt. 18 when a relationship doesn't work). But beware making multiplication a golden calf: "We are disciples not rabbits." Growth in grace, not multiplication rate, is the goal.
Why this matters for discipling one-on-one
This is the spine of your one-on-one practice. Every conversation can follow the three movements: help them see and repent of sin (what/when/why), then rejoice in Christ (how is Jesus better than what sin offers?), then point to reproduction (who will they share this with?). And these three principles are why Dodson requires a discipleship group — your own lifeline while you disciple others.
Check yourself
What are the three questions to know your sin?
Correct: What (the sin), when (the circumstance), why (the motive / "the sin under the sin"). These three questions are how a discipleship group gets below behavior to the heart. Options are 18–22 chars. The why is the most neglected — and the most gospel-centered, because it exposes the lie we're believing.
Why do we "rejoice in Christ" as part of fighting sin?
Correct: Sin secretly says "I'm better than what Jesus offers." Rejoicing in Christ — his attributes, gospel metaphors, promises — displaces sin's false promise with a true one. Options are 39–43 chars. It's not about keeping meetings positive; it's about replacing the false promise with a true, satisfying one.
How should a discipleship group reproduce?
Correct: Adding a third/fourth, multiplying into new groups, and subtracting when a relationship doesn't work (Matt. 18). All aim at making more disciples, not just growing a meeting. Options are 22–25 chars. The key nuance: reproduction is a goal, but not a golden calf — "we are disciples not rabbits."
Your one win: run the three movements
Practice — before the next lesson
Diagnose one sin with What/When/Why. Pick a real, current sin. Name it (what), find its circumstance (when), and dig to the lie beneath it (why). Write it as: "Sin says: ____. Scripture says: ____."
Find your gospel promise. Take the lie you found and search for a promise of God that answers it (try the examples in the lesson: Matt. 5:8 for lust, 1 John 3:2 for vanity, 2 Cor. 3:4–6 for pride, Ps. 4:4–5 for anger). Write it next to the sin-promise.
Self-check: If you're discipling someone, this week try steering one conversation through the three movements — repent, rejoice, reproduce. If you're not yet, this is exactly the practice to take into a one-on-one.
Read / watch this
Primary source for this lesson: Chapter 9, "Peer Discipleship" in your local copy of the book (gospel-centered_discipleship_1.md, lines 1144–1279) — or the print edition pp. 141–156. Read it once with the three movements in front of you.
For depth on the "why" under sin: Timothy Keller, "All of Life Is Repentance" (Redeemer) — the source of "the sin under the sin," and Tim Chester, You Can Change (IVP, 2008), for the repentance-and-faith coin.
Keep this at hand
Glossary of key terms — definitions of What? When? Why? and Repent · Rejoice · Reproduce.
Book map — where ch. 9 sits at the center of Part 3.