Mission & Evangelism

“And Jesus came and said to them, ‘All authority in heaven and on earth has been given to me. Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe all that I have commanded you. And behold, I am with you always, to the end of the age.’” — Matthew 28:18-20

The Church’s mission is not ultimately a human initiative but a participation in the missio Dei — the mission of God Himself. The Father sent the Son into the world (John 3:16–17); the Son sends the Spirit (Acts 2); and the triune God sends the Church. Mission flows from the very heart of the Trinity — the self-sending, self-giving God who seeks the lost and reconciles the world to Himself (2 Corinthians 5:18–19).

The Great Commission

The risen Christ’s final command to His disciples is the charter of the Church’s mission. Several features stand out:

• Universal authority — “All exousia (ἐξουσία) — ‘authority, rightful power’ — in heaven and on earth has been given to me.” The mission rests on Christ’s sovereign lordship over all things.
• All nations — The Greek ethne (ἔθνη) refers to peoples and people groups, not merely political states. The gospel is for every tribe, language, and nation (Revelation 7:9), fulfilling the Abrahamic promise that “in you all the families of the earth shall be blessed” (Genesis 12:3).
• Make disciples — The central command is not merely to announce information but to make mathētai (μαθηταί) — learners, followers, apprentices of Jesus.
• Abiding presence — “I am with you always.” The mission is sustained not by human effort alone but by Christ’s own presence through His Spirit.

The Language of Mission

Kerygma (κήρυγμα) — Proclamation

The early Church was marked by kerygma — from the verb kerysso (κηρύσσω) — “to herald, proclaim as a public crier” — the public proclamation of what God has done in Christ. The apostolic preaching in Acts declares the death, resurrection, and lordship of Jesus and calls hearers to metanoia (μετάνοια) — “repentance, a change of mind and direction” — and pistis (πίστις) — “faith, trust, confident reliance” (Acts 2:14-41; 3:12-26; 10:34-43; 17:22-31). Evangelism — from euangelion (εὐαγγέλιον), “good news” — echoes the Hebrew basar (בָּשַׂר) — “to bring good tidings,” the word Isaiah used for the herald announcing God’s salvation (Isaiah 52:7; 61:1). It is the announcement that God’s kingdom — basileia tou Theou (βασιλεία τοῦ Θεοῦ) — has come in Jesus Christ.

Martyria (μαρτυρία) — Witness

Jesus told his disciples, “You will be my martyres (μάρτυρες) — witnesses” (Acts 1:8). The related noun martyria (μαρτυρία) means testimony or witness — the same root from which we derive “martyr,” because early Christians sealed their testimony with their lives. The Church bears witness to Christ not only in word but in life, and when necessary, in suffering. The witness of a faithful life confirms and adorns the proclaimed message (1 Peter 2:12; 3:15-16).

Diakonia (διακονία) — Service

The Church’s mission includes tangible service to the world. Jesus came “not to be served (diakonethenai, διακονηθῆναι) but to serve (diakonesai, διακονῆσαι) and to give his life as a ransom — lytron (λύτρον) — for many” (Mark 10:45), and his followers are called to do likewise. Care for the poor, the sick, the orphan, and the stranger has been integral to Christian mission from the earliest days (Acts 2:44-45; 6:1-6; James 1:27; Galatians 6:10).

The Mission of the Church

The Church’s mission may be understood under four interrelated dimensions:

• Worship — latreia (λατρεία) — “service, worship” — The Church gathers to glorify God, offering their bodies as a “living sacrifice” — thysian zosan (θυσίαν ζῶσαν) — and scattered believers carry that worship into every sphere of life (Romans 12:1; Colossians 3:17)
• Discipleship — Believers are formed into Christlikeness through the Word, prayer, fellowship, and mutual accountability (Ephesians 4:11-16; Colossians 1:28-29)
• Service — The Church demonstrates the love of Christ through deeds of mercy and justice (Micah 6:8; Matthew 25:35-40; James 2:15-17)
• Proclamation — The Church declares the gospel to those who have not heard, serving as presbeis (πρεσβεῖς) — “ambassadors” — for Christ, through whom God makes his appeal, entrusted with the logos tes katallages (λόγος τῆς καταλλαγῆς) — “the word/message of reconciliation” (Romans 10:14-15; 2 Corinthians 5:18-20)

Acts: The Model for Mission

The book of Acts provides the narrative blueprint for the Church’s mission:

• The Spirit empowers the Church for witness (Acts 1:8; 2:1-4)
• The gospel moves outward from Jerusalem to Judea, Samaria, and the ends of the earth (Acts 1:8)
• New churches are planted and entrusted to local leaders (Acts 14:21-23)
• Cultural barriers are crossed as the gospel reaches Gentiles (Acts 10-11; 15)
• Suffering and opposition do not hinder the mission but advance it (Acts 8:1-4; 16:25-34)

The Nations and the Coming Kingdom

God’s missionary purpose is woven through the whole of Scripture. He promised Abraham, “In you all the families — mishpechot (מִשְׁפְּחֹת) — of the earth shall be blessed” — nivrekhu (נִבְרְכוּ), from barak (בָּרַךְ) — “to bless, to endue with power for flourishing” (Genesis 12:3). The prophets foresaw the nations streaming to the light of God’s glory (Isaiah 2:2-3; 60:1-3). Jesus declared that “this gospel of the kingdom will be proclaimed throughout the whole world as a testimony to all nations” (Matthew 24:14).

The Christian traditions have emphasized different dimensions of this mission. The Catholic tradition, particularly since the Second Vatican Council, has stressed both proclamation and integral human development — the inseparability of evangelization from the promotion of justice, peace, and human dignity. The Orthodox tradition understands the Divine Liturgy itself as the Church’s primary missionary act — the gathered community, by worshipping the true God, becomes a beacon of transfigured life that draws the world toward Christ. The Protestant and evangelical traditions have emphasized the urgency of verbal proclamation: “How are they to believe in him of whom they have never heard? And how are they to hear without someone preaching?” (Romans 10:14). At their best, all three streams recognize that word, deed, and worship belong together — the Church proclaims, serves, and adores, and in doing so bears witness to the Kingdom of God that is already breaking in and will one day be consummated.

The Church carries this mission forward in the confidence that Christ will build His Church (Matthew 16:18), that the Spirit empowers the work (Acts 1:8), and that one day a great multitude from every nation will stand before the throne, singing, “Salvation belongs to our God” (Revelation 7:9–10). The global spread of Christianity across two millennia — from Jerusalem to the ends of the earth — is the ongoing fulfillment of this promise.

“After this I looked, and behold, a great multitude that no one could number, from every nation, from all tribes and peoples and languages, standing before the throne and before the Lamb.” — Revelation 7:9