Core Doctrine

When life puts pressure on your faith, what beliefs are actually carrying the weight?

Doctrine is sometimes treated as a list for specialists, but everyone lives from beliefs about God, people, salvation, suffering, power, and hope. The question is whether those beliefs have been examined in Scripture and are producing a life shaped by Jesus. This lesson strengthens several load-bearing convictions while teaching us to speak with both clarity and humility.

1. Doctrine is teaching you live from

Acts 2:42–47; Titus 2:1–14

The word doctrine simply means teaching. In Acts 2, the new community devotes itself to the apostles’ teaching alongside fellowship, shared meals, prayer, generosity, and praise. Teaching is not isolated from the community’s way of life.

Titus 2 repeatedly connects sound teaching with conduct. Different people receive practical instruction, and the passage grounds that life in God’s grace and the hope centered on Jesus. Doctrine provides more than facts to defend; it helps a community recognize what faithful life looks like.

Bad doctrine can distort worship, excuse harm, or make human leaders appear beyond correction. Sound doctrine should turn attention toward God, make us more truthful, and form love, holiness, endurance, and hope. We test teaching by reading Scripture carefully, not merely by admiring the speaker.

2. Keep the foundation and grow toward maturity

Hebrews 5:11–6:3

Hebrews addresses believers who should be able to teach but still need basic instruction. The writer names foundational subjects and urges the community to move toward maturity. Read from 5:11 so that the warning about immaturity remains connected to the list in 6:1–2.

Moving forward does not mean declaring the foundation obsolete. A building rises because its foundation remains in place. In the same way, deeper study should strengthen—not replace—repentance, faith, resurrection hope, and accountable life before God.

Maturity is not the ability to make every topic sound complicated. It includes practiced discernment, teachability, perseverance, and faithful response. A beginner may ask honest foundational questions; a long-time believer may need to revisit them. Neither should pretend understanding they do not yet have.

3. Keep Jesus at the center

John 1:1–18; Philippians 2:5–11; 1 Corinthians 15:1–8

John introduces the Word as existing in the beginning, in relationship with God, and sharing the divine identity. The Word becomes flesh and lives among us. Philippians describes Christ’s self-humbling, obedient death, and exaltation. Read what each passage says before compressing them into a formula.

JGM confesses Jesus Christ as God the Son, truly divine and truly human. He is not half of each, a created helper, or a divine figure who only appeared human. His real humanity matters for His obedience, suffering, death, and sympathy with human weakness; His divine identity matters for worship, revelation, salvation, and lordship.

First Corinthians 15 keeps His death for sins and bodily resurrection at the center of the gospel. Doctrine about Jesus is not an abstract puzzle. It shapes whom we trust, whom we worship, how we understand the cross, and what hope we carry into suffering and death.

4. Relate to the Holy Spirit; do not try to use Him

John 14:15–27; Romans 8:1–27

In John 14, Jesus speaks of another Helper who will be with and in His disciples, teach them, and remind them of His words. Romans 8 describes the Spirit dwelling in believers, leading God’s children, bearing witness, helping in weakness, and interceding. These are personal and relational actions.

Calling the Spirit a Person does not mean He is human. It means we should not speak as if God’s Spirit were spiritual electricity available for our control. We listen, depend, pray, obey, and test our impressions rather than using spiritual language to pressure others.

The Spirit’s work is not measured only by an intense moment. Romans 8 connects His presence with life, belonging, adoption, prayer in weakness, and hope. Other passages describe gifts for service. Dependence on the Spirit should produce witness and build up the Church, not elevate a personality.

5. The Church is one body with diverse gifts

Ephesians 4:1–16

Paul urges believers to live with humility, gentleness, patience, and love while maintaining the unity of the Spirit. He names one body, one Spirit, one hope, one Lord, one faith, one baptism, and one God and Father. This unity is received and practiced; it is not manufactured by pretending differences do not exist.

The same passage describes different gifts that equip the saints for ministry and build up Christ’s body. Leaders do not perform all ministry while everyone else watches. The body grows as its members serve and as truth is spoken in love.

No local congregation is perfect, and church participation never requires tolerating abuse or hiding wrongdoing. Accountability, safeguarding, and truthful correction serve the body’s health. When leaving an unsafe situation is necessary, seek wise support; the doctrine of the Church should not be used to trap someone in harm.

6. Use the five solas as a map, not a substitute for Scripture

2 Timothy 3:14–17; Acts 4:8–12; Ephesians 2:1–10

The five solas are historical summaries associated with the Protestant Reformation: Scripture alone, Christ alone, grace alone, faith alone, and glory to God alone. They emphasize Scripture as the final written authority, Christ as the only mediator and Savior, salvation as God’s gift received through faith, and God as the final object of glory.

The slogans can help organize study, but they are not Bible verses and they do not contain the whole Christian faith. Read the passages to see what each claim is summarizing. Ephesians 2, for example, includes both the gift of salvation and the good works that follow in the life God creates.

Christians from different traditions may define or apply these phrases differently. In this Academy, state JGM’s position clearly, explain it from Scripture, and avoid pretending the slogans eliminate every historical or theological question. Good summaries send us back to the text.

7. Hold core convictions with clarity and humility

Ephesians 4:1–16; Romans 14:1–13

Not every doctrine has the same role. Some convictions describe the center of the Christian message and the identity of the God Christians worship. Other questions are important but have been answered differently among faithful Christian communities. Preferences about style, personality, or custom should not be promoted into tests of salvation.

Romans 14 addresses disputed practices and warns believers against despising or judging one another. The chapter does not say truth never matters or that harmful conduct should be ignored. It does show that belonging to Christ changes how we handle disagreement and the conscience of another person.

Use three questions: What does the passage clearly teach? How directly does this claim belong to the gospel and JGM’s stated faith? What kind of unity or disagreement is faithful here? Clarity without love becomes harsh; tolerance without truth becomes empty. Ephesians 4 holds truth and love together as the body grows into Christ.

Study the passage

• Observe: read John 1:1–18. List what the passage says about the Word before consulting a doctrinal summary.
• Interpret: compare your observations with Philippians 2:5–11. Explain how JGM’s confession of Jesus as truly God and truly human draws these teachings together.
• Apply: choose one implication for worship, humility, suffering, obedience, or hope. State why the application follows, and do not present your example as though it were another verse.

Practice this week

• Day 1 — Read Hebrews 5:11–6:3. Name one foundation you need to understand more clearly and one sign of maturity you need to practice.
• Day 2 — Read John 1:1–18. Write every claim the passage makes about the Word.
• Day 3 — Read Philippians 2:5–11. Choose one act of humility that reflects the mind of Christ.
• Day 4 — Read Romans 8:1–27. Turn one truth about the Holy Spirit into prayer.
• Day 5 — Read Ephesians 4:1–16. Encourage or serve one member of Christ’s body without drawing attention to yourself.
• Day 6 — Read Romans 14:1–13. Identify one secondary matter where you need more humility, patience, or restraint.
• Day 7 — Explain one core doctrine to a willing listener using a passage, a plain-language summary, and one practical implication. Ask what was clear.

Teaching points

• Doctrine means teaching. Christian doctrine gathers what Scripture teaches so that we can know God faithfully and live in response to Him.
• A foundation is meant to support growth. Hebrews 5:11–6:3 calls believers beyond immaturity while naming truths that must remain underneath everything that follows.
• Jesus Christ is truly God and truly human. His incarnation, death, resurrection, reign, and promised return stand at the center of Christian confession.
• The Holy Spirit is not an impersonal power. Scripture describes Him teaching, leading, interceding, giving gifts, and dwelling in God’s people.
• The Church is Christ’s body: one people with diverse gifts, called to truth, love, worship, service, maturity, and witness.
• The five solas are historical Reformation summaries—Scripture alone, Christ alone, grace alone, faith alone, and glory to God alone. They are study guides, not substitutes for reading Scripture in context.

Read in Scripture

• Hebrews 5:11–6:3
• John 1:1–18
• Philippians 2:5–11
• 1 Corinthians 15:1–8
• John 14:15–27
• Romans 8:1–27
• Ephesians 4:1–16
• Romans 14:1–13

Reflect

• Which belief about Jesus can I repeat but struggle to explain from a passage?
• Where has a secondary preference become a test I use to judge another believer’s faithfulness?
• How does relating to the Holy Spirit as personal—not as a tool—change the way I pray and obey?
• What gift or responsibility can I use to build up Christ’s body rather than draw attention to myself?
• What doctrine needs to move from my vocabulary into a concrete choice this week?

Put it into practice

• Read John 1:1–18 and Philippians 2:5–11. Write what each passage says about Jesus before combining the observations into a summary.
• Read Romans 8:1–27. List the actions attributed to the Holy Spirit and turn one observation into a prayer for the week.
• Ask a mature believer how your church distinguishes essential doctrine from secondary disagreement. Compare the answer with Ephesians 4 and Romans 14.
• Choose one way to build up the body this week through truth, encouragement, service, generosity, reconciliation, or prayer. Record what you actually did.