The mission of the church is given by the risen Jesus Christ. Before ascending to heaven, He declared that all authority in heaven and earth belonged to Him and then commissioned His disciples:
“Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: Teaching them to observe all things whatsoever I have commanded you.” — Matthew 28:19–20
The church therefore does not invent its mission from the perceived needs of each generation. Christ has already given it. The church is sent into the world to proclaim the gospel, make disciples, baptize those received into the visible church, teach them the whole counsel of Christ, establish and strengthen churches, and carry this work among the nations until He returns.
The mission rests upon Christ’s authority, depends upon His Spirit, and advances under His promised presence.
The Mission Begins with Christ’s Authority
The Great Commission begins before the command to go: “All power is given unto me in heaven and in earth” (Matthew 28:18).
Mission therefore begins with Christ’s kingship.
The church does not approach the world as though Jesus were one religious option among many. The crucified Christ has risen, and He possesses universal authority. The gospel announces the only Savior through whom sinners may be reconciled to God.
Christ’s authority also governs the church’s methods and message. Because the mission belongs to Him, the church may not substitute another goal or soften the content of the gospel simply because doing so appears more culturally acceptable or immediately successful.
The King’s authority gives both the commission and its boundaries.
Making Disciples
The central command in Matthew 28 is to make disciples of all nations. The KJV renders the verb “teach all nations,” while the underlying word carries the idea of discipling.
Christ then explains this disciple-making through baptism and teaching.
A disciple is therefore more than someone who has made an isolated religious decision. The church seeks, by God’s grace, to see unbelievers brought to repentance and faith, incorporated into the visible church, and taught to obey everything Christ commanded.
Evangelism and discipleship should not be separated as though conversion were the real mission and Christian maturity merely an optional sequel. The gospel summons sinners into a life of following Christ, and the Great Commission aims at mature, obedient disciples.
The Gospel Must Be Spoken
Christian conduct matters profoundly. Holiness commends the gospel, hypocrisy contradicts it, and works of mercy display the love that grace produces. Yet no life, however admirable, can by itself tell a sinner that Christ died for sins, rose from the dead, and commands all people to repent and believe.
The gospel has content that must be communicated.
Paul asks:
“How shall they believe in him of whom they have not heard? and how shall they hear without a preacher?” — Romans 10:14
Mission therefore requires verbal proclamation. The church announces the holiness of God, the guilt of man, the person and saving work of Jesus Christ, the necessity of repentance and faith, and the promise of forgiveness and eternal life to everyone who receives Him.
Whenever that message becomes peripheral, the mission of the church has lost its center.
The Holy Ghost Gives Power
Christ did not send His church into the world in its own strength. Before His ascension He promised:
“But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me… unto the uttermost part of the earth.” — Acts 1:8
Acts then records the spread of the gospel as the Spirit empowers the preaching of Christ and opens hearts to receive the Word.
The church remains dependent upon the same Holy Ghost. Missionary strategy, theological training, organization, financial support, cultural knowledge, and careful communication all have legitimate value, but none can regenerate a sinner.
Only God gives spiritual life.
For that reason, missionary churches must also be praying churches. Paul repeatedly asked believers to pray that doors would open for the Word and that he might speak the gospel clearly and boldly.
Prayer does not replace missionary labor; it acknowledges the divine power upon which all fruitful labor depends.
Local and Global Mission
Christ’s commission reaches from the places immediately around us to “the uttermost part of the earth.”
A church therefore bears responsibility both near and far.
Local evangelism begins with the people God has placed within reach: relatives, neighbors, coworkers, students, visitors, and others in the surrounding community. Christians should seek natural opportunities to speak about Christ, invite people beneath the preaching of the Word, answer questions honestly, and pray for conversions.
Yet the Great Commission prevents any congregation from treating its own neighborhood as the limit of Christ’s concern.
Revelation 7 portrays a redeemed multitude “of all nations, and kindreds, and people, and tongues” before the throne. Churches therefore send, support, and pray for gospel workers beyond their immediate region and cooperate in evangelism, church planting, theological training, and the strengthening of churches around the world.
The horizon of Christ’s commission is the nations.
Mission Leads to Churches
The missionary pattern of Acts does not ordinarily leave converts as disconnected individuals.
The apostles preached Christ, disciples were gathered, churches were formed, and elders were appointed. Paul and Barnabas later returned through places where the gospel had been received and “ordained them elders in every church” (Acts 14:23).
Church planting therefore belongs naturally to the Great Commission.
The goal is not merely to accumulate professions of faith. Converts need preaching, sacraments, discipline, fellowship, pastoral oversight, and the communion of saints. These are gifts Christ provides through the visible church.
Healthy mission therefore seeks to establish churches capable of continuing the work of worship, discipleship, evangelism, and pastoral care after the initial missionary has gone.
Baptism and Teaching
Christ explicitly includes baptism in the Great Commission. Mission is therefore ecclesiastical as well as evangelistic.
Those received into the visible church are marked with Christ’s appointed sign and brought into an identifiable community of worship, doctrine, fellowship, and accountability.
The FPCNA allows both paedobaptist and credobaptist understandings of the proper subjects of baptism, but both positions agree that baptism is Christ’s ordinance and belongs to the missionary commission of His church.
The commission also requires the church to teach disciples “to observe all things whatsoever I have commanded you.” This gives doctrinal instruction and Christian formation an essential place in mission.
Paul describes his ministry in Colossians 1:28: “Whom we preach, warning every man, and teaching every man in all wisdom; that we may present every man perfect in Christ Jesus.”
Mission therefore seeks both conversion and maturity. New Christians need to learn Scripture, doctrine, worship, prayer, Christian ethics, family life, church membership, vocation, suffering, witness, and the ordinary disciplines of following Christ.
Mercy and Good Works
Christians are commanded to love their neighbors, care for the poor, visit the afflicted, practice generosity, defend what is right, and do good to all as they have opportunity. The church also possesses a genuine ministry of mercy, particularly through the diaconate and the communion of saints.
These duties are not incidental to Christian obedience.
At the same time, the church should distinguish its peculiar institutional mission from the broader range of responsibilities Christians fulfill in their ordinary callings. The New Testament commissions the church particularly with the ministry of the Word, sacraments, prayer, discipline, mercy, and the gathering and perfecting of the saints.
Christians remain citizens, parents, teachers, employers, employees, craftsmen, professionals, and neighbors. In those callings they should seek justice, oppose evil, show mercy, and pursue the good of those around them.
The distinction prevents two distortions. The church should not redefine the gospel as a program of social or cultural improvement, because improved circumstances cannot reconcile sinners to God. Yet Christians who proclaim the gospel while showing indifference to human suffering contradict the love their message proclaims.
Gathering and Perfecting the Saints
The church’s mission is not directed only toward those outside it.
WCF 25.3 says Christ has given the visible church “the ministry, oracles, and ordinances of God, for the gathering and perfecting of the saints.”
The church therefore evangelizes the lost and builds up those who have been converted. A congregation consumed with internal nurture while showing little concern for unbelievers has neglected part of Christ’s commission. A congregation preoccupied with attracting outsiders while failing to nourish its own members has become equally distorted.
The two responsibilities strengthen one another. Mature believers become more capable witnesses, while evangelistic concern prevents the church from becoming inward and self-protective.
The Mission Belongs to the Whole Church
Not every Christian is called to ordained ministry or to missionary service in a formal sense, but every believer is called to confess Christ.
Peter tells Christians to be ready to give an answer for the hope within them (1 Peter 3:15), and Jesus describes His people as salt and light in the world.
Ordinary believers have opportunities unavailable to ministers because they live and work among people who may never initially enter a church. Faithful witness need not imitate a sermon. It may begin with clear understanding of the gospel, genuine friendship, natural conversation about Christ, thoughtful answers to questions, hospitality, invitations to worship, and persistent prayer.
Different members serve according to different gifts and callings, but the mission belongs to the whole church.
Doctrinal Faithfulness in Mission
Missionary zeal must remain governed by truth.
Paul warns against “another gospel” in Galatians 1:6–9. The church must therefore care not only that missionary activity takes place but also what gospel is preached and what kind of churches are established.
A desire for broader cooperation or larger results cannot justify obscuring the authority of Scripture, the deity and substitutionary work of Christ, justification by faith alone, or other truths essential to the gospel.
Cultural sensitivity can remove unnecessary barriers to understanding. It must never remove the offense inherent in the biblical message.
Mission serves Christ only when it carries Christ’s gospel faithfully.
The Goal of Mission
The Great Commission will not continue forever. One day Christ will return, the gathering of the church will be complete, and faith will become sight.
Evangelism will cease.
Worship will not.
Revelation portrays the redeemed nations before the throne praising God and the Lamb. Mission therefore serves the greater end of the glory of God among a redeemed people.
This gives the church confidence when missionary work seems weak or difficult. Christ has promised, “I will build my church; and the gates of hell shall not prevail against it” (Matthew 16:18). The church remains responsible for faithful preaching, prayer, witness, teaching, baptism, church planting, and patient labor, while God Himself gives the increase.
The same Christ who commands the mission also attaches His presence to it: “Lo, I am with you alway, even unto the end of the world” (Matthew 28:20).
Westminster references: WCF 8.8, 10.1–4, 25.2–5, 26.1–2, 27.1–5; WLC 61–67, 154–160; WSC 85–90.