MAJOR IDEAS

I. The Gospel Must Be Proclaimed with Fullness

II. True Evangelism Requires Conviction, Repentance, and Faith

III. Conversion Is Expressed Through Baptism

IV. Evangelism and Discipleship Are Inseparable

V. The Goal of Evangelism Is Incorporation into the Local Church

VI. Christ Gathers His People through the Gospel and Grows Them through the Church

SERMON PROPOSITION

Christ gathers people to himself through the gospel and grows them to maturity through life in his church. Evangelism and discipleship find their fulfillment in the faithful life of the local assembly — and this is the heart of Christianity.

Part I: The Problem with Shallow Evangelism

The church has been given a clear commission. All four Gospels and the book of Acts record Christ's command to proclaim repentance and faith in his name to every nation. The early church understood this commission and carried it out faithfully. Yet today, there is reason to fear that our working concept of evangelism has become too narrow, too shallow — and in many ways, has missed the mark of what Scripture actually calls us to do.

The problem is not that we share the gospel at all — it is that we often share too little of it. A brief summary like "Jesus died for you; just pray and ask him to save you" may carry a kernel of truth, but it raises more questions than it answers. Why does that person need Christ? What must they understand about his death? What makes his death different from the death of any other man? Without answers to these questions, the message lacks the substance needed to bring genuine understanding.

We must also be careful about how we handle the exceptions we encounter in life. Scripture is not to be interpreted by its exceptions, nor by mere generalities. We must accept what the Bible says, compare Scripture with Scripture, and allow its full teaching to shape our understanding and practice — including the practice of evangelism.

Part II: The Content of the Gospel

At the heart of the Christian message is a diagnosis of the human condition. Death is not an accident of nature — it is the consequence of sin. We are born as descendants of Adam, carrying inherited guilt and a nature that is, from its very beginning, oriented against God. If you doubt this, consider your own life: the truths you have resisted, the things of God you have neglected, the moments when you simply did not want what God wanted.

This condition is not merely unfortunate — it is fatal. Without a Savior, without deliverance, men and women will perish eternally: not only in bodily death, but as complete persons — spirit, soul, and body — cast into hell. Every religion in the world bears witness, in its own way, to this universal sense that something is wrong and that something must be done. But the person who is lost and turned against God can never offer to God that which is well-pleasing in his sight. All human striving falls short.

This is where the gospel comes in. God, moved by eternal love and centered upon his Son, chose a people to be united to him. He sent his Son, and the Son came willingly — becoming one of us, a human being, the man Christ Jesus — to undertake for us what we could never do for ourselves.

The Death, Burial, and Resurrection of Christ Jesus was born with a body subject to death, and he died. But he did not die for his own sin — he had none. He died for the sins of his people, taking their guilt upon himself and bearing the punishment of God in their place. On the cross, he endured the alienation of the Father in a mystery we cannot fully grasp: always united to the Father in one sense, yet crying out, "My God, why have you forsaken me?" — the agony of bearing the weight of human transgression.

He was buried. He descended into death. But on the third day, he rose in the same body that had been put to death — now transformed, immortal, glorified. This is the heart of the Christian faith: the person of Jesus Christ and what he has done for sinful people. This is the message we are called to share.

Part III: The Pattern of Biblical Evangelism — Acts 2

The book of Acts gives us the clearest template for what biblical evangelism looks like. On the Day of Pentecost — the first full day of the new covenant economy, marked by the outpouring of the Holy Spirit — we see a pattern that repeats itself throughout the entire book. Let us trace that pattern carefully.

Step 1: The Gospel Is Proclaimed in Words

When the miraculous phenomena of Pentecost drew a great crowd, Peter stood up with the eleven and preached. Notice: he did not rely on the spectacle alone. He opened his mouth and spoke. The gospel requires words — written or spoken — words about Jesus of Nazareth.

Peter's sermon, summarized in Acts 2:22–36, declared who Jesus was, what happened to him, and what it means. He spoke of Christ's miraculous works attested by God, his death at the hands of lawless men according to God's definite plan, his resurrection as foretold by David, his exaltation to the right hand of the Father, and his identity as Lord and Messiah. This is the substance of gospel proclamation. As Peter himself put it:

"Let all the house of Israel therefore know for certain that God has made him both Lord and Christ, this Jesus whom you crucified." — Acts 2:36

Some say they will preach the gospel through their lives alone. While a believer's life can bear witness to the work of grace, it cannot preach the gospel by itself. The gospel requires your words.

Step 2: The Gospel Produces Conviction

When the crowd heard Peter's message, they were "cut to the heart." Conviction is that internal stab of awareness — of one's need, one's wrongdoing, one's desperate situation before a holy God. It is not merely an emotional reaction; it is the Spirit of God using the word of God to make a sinner aware of his condition. The crowd cried out, "Brothers, what shall we do?" — the cry of people who understood that unless their need was met, they would perish.

Step 3: The Gospel Calls for Repentance and Faith

Peter's answer is the answer that echoes throughout the entire book of Acts: "Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins" (Acts 2:38). Wherever the gospel is preached in Acts and a response is recorded, it involves repentance — a turning around, a turning away from sin and self toward Christ.

Why do people repent? Why do those who did not believe come to believe? The answer is regeneration. We do not cause our own spiritual birth any more than we caused our physical birth. The Holy Spirit, working through the proclamation of the word, is the one who brings the new birth. But that birth is evidenced by what we call conversion: repentance and faith.

C. S. Lewis, reflecting on his own conversion, noted that he could not pinpoint the exact moment the light came on. He simply knew that when he stepped out of the vehicle he had been riding in, something had changed — he believed. Knowing the content of the gospel intellectually is different from the heart-knowledge that embraces Christ by faith. The latter is the work of the Spirit.

Step 4: Believers Are Baptized

Peter's call to repentance is inseparable from a call to baptism. Baptism is not incidental — it is the public expression and seal of faith in Christ. In the book of Acts, it is through baptism that the believing community could identify who had repented and believed: they were willing — indeed, eager — to be baptized in Christ's name.

Baptism declares that we have died with Christ, been buried with him, and been raised to walk in newness of life for the glory of God. It is the believer's first act of open identification with the Lord Jesus Christ.

Step 5: Disciples Are Added to the Church

After their baptism, the three thousand were not left on their own. They were added — added to the community, added to the fellowship of believers. This is the clearest single passage in all of Scripture demonstrating that the goal of evangelism is not merely individual decisions. The Bible records:

"And they devoted themselves to the apostles' teaching and the fellowship, to the breaking of bread and the prayers." — Acts 2:42

Their life together extended beyond formal gatherings. They cared for one another, sharing their possessions with any who had need, meeting daily in the temple and in one another's homes, sharing meals with glad and generous hearts, and praising God. The result? The Lord added daily to their number those who were being saved.

This is biblical evangelism. It is not: hear a four-point summary, say a prayer, and be sent on your way. It is: hear the gospel, be convicted, repent, believe, be baptized, and be incorporated into the life of the body of Christ.

Part IV: The Same Pattern Repeated

Philip and the Samaritans (Acts 8)

Philip — not an apostle, but one of the seven chosen to serve the Jerusalem church — went to Samaria and proclaimed Christ. The crowds paid attention, the Lord confirmed the word with signs, and there was great joy in the city. The result followed the same pattern: "When they believed Philip as he preached good news about the kingdom of God and the name of Jesus Christ, they were baptized, both men and women" (Acts 8:12). They believed. They were baptized. They became part of a fellowship.

Philip and the Ethiopian Eunuch (Acts 8)

The same Spirit who sent Philip to Samaria then directed him to a desert road, where an Ethiopian official was reading aloud from Isaiah 53. Philip ran alongside his chariot and asked a single leading question: "Do you understand what you are reading?" The answer opened the door to a conversation about Christ.

Beginning with the very scripture the man was reading — Isaiah 53's prophecy of the Suffering Servant — Philip told him the good news about Jesus. As they traveled, conviction grew in the eunuch's heart. When they came to a body of water, the official himself asked, "What prevents me from being baptized?" — evidence that Philip had taught him that baptism was how one publicly identified with Jesus Christ. He was baptized then and there. The pattern holds.

Paul and the Thessalonians (1 Thessalonians 1)

Writing to a congregation of former pagans, the apostle Paul describes how the gospel came to them and what followed. His words trace the same arc: the word came with power and with the Holy Spirit and with full conviction. They received it — even in the midst of great affliction — with the joy of the Holy Spirit. They turned from idols to serve the living and true God and to wait for his Son from heaven.

The result? Their faith became so well-known that Paul did not need to say a word about them wherever he traveled. The word of the Lord had sounded forth from them throughout Macedonia and Achaia. They had become imitators of the apostles and of the Lord himself — that is, disciples. And they, in turn, were sharing the gospel with others.

Part V: Evangelism, Discipleship, and the Local Church

One of the most important correctives this pattern offers is this: evangelism and discipleship are not two separate activities. They are one united work. You cannot have biblical evangelism that is devoid of discipleship. The goal of gospel proclamation is not merely individual conversion — though personal faith is absolutely essential — but the gathering of worshipers into the household of God, where they are discipled, nurtured, brought to maturity, and equipped for service until Christ returns.

The Bible does not know anything about an individualistic salvation that exists in isolation from the body Christ is building. We are saved personally, but never alone. We know God individually, but we do not know him in isolation — we know him in the communion of the saints, in the assembly of the people of God. The local church is not optional for the Christian life. Participation in the life of the assembly is a command, not a preference.

In Christ's Great Commission (Matthew 28:18–20), he commanded his disciples to make disciples of all nations — baptizing them and teaching them to observe everything he commanded. That teaching, that formation, that ongoing life in the word: it happens in the church. The same commission in Luke 24 connects repentance for the forgiveness of sins, proclaimed in Christ's name to all nations, directly to the witness of those who know him.

The local assembly — a gathered body of believers under the lordship of Christ, under the teaching of his word, celebrating the gospel ordinances he has ordained, living in genuine fellowship — is the context in which Christianity finds its full expression. Those who repent and believe should be baptized and discipled in the fellowship of a local body of believers. The goal of all evangelistic effort is to bring people not only to individual faith in Christ, but to participation in the life of the local church.

Conclusion: The Essentials

The essentials of biblical evangelism, drawn from the pattern of Acts and the testimony of the epistles, may be summarized as follows. The gospel must be proclaimed — in words, with substance, declaring who Christ is and what he has done. The gospel must be received — heard, understood, and accompanied by the Spirit's work of conviction. Conviction gives way to conversion, which consists of repentance and faith, and which is itself the fruit of regeneration brought about by the Holy Spirit through the word. Conversion is then expressed and sealed in baptism, through which the believer is visibly identified with Christ's death, burial, and resurrection. The baptized believer is added to the church — the local assembly of believers — where, through the preaching of the word, the fellowship of the Lord's table, and life together as a covenant community, he or she is sanctified: set apart for God, growing into the image and likeness of Christ.

Christ is gathering visible assemblies through the ministry of the word and the gospel ordinances. This is how the kingdom of God advances in the earth today. We have substituted the decisionism of mere prayer-prayers and hasty farewells for the full-orbed pattern of biblical evangelism. Let us return to it: sharing the word of Christ with fullness, calling men and women to genuine repentance and faith, welcoming them into the body of Christ, and walking with them as they grow in the grace and knowledge of our Lord.

Closing Prayer

Our Father, we come before you with joy and gratitude — joy that you sent the Savior, gratitude that he loved us enough to take our debt and our transgression upon himself, bearing its penalty so that we might know you, love you, and walk in the light of your truth. We bless the name of Jesus Christ, our Lord. We bless you, O Holy Spirit, that you do not leave us in our blindness and our deadness, but that you take the word of God and make us alive — making us understand our lostness, causing us to cry out to Christ, turning our hearts from self and sin to him and to the pursuit of a life that is pleasing to you. Lord, we want to grow in our knowledge of you. We want to grow in the likeness of Christ. We want the power of your Spirit so that we may share the word of Christ effectively with others, and see your kingdom advance and your church grow and mature. Here we are, Lord — your children, by your grace, through faith in Christ — and we want to be used by you. We present our bodies, our minds, our souls, and our spirits to you as a living sacrifice. Work in us, we pray, so that we will understand, believe, and faithfully share your truth with others. This is our prayer; be pleased to accept us in the merits of Christ, and grant us the enablement, blessing, and gifting of the Spirit of God — for your glory and your honor. Amen.