📖 Biblical Definition
The mission of the church is not a program — it is the heartbeat of God. The Father sent the Son (John 3:16). The Son sent the Spirit (John 16:7). The Spirit sends the church (Acts 13:2-4). God is a sending God, and His people are a sent people.
The Great Commission (Matthew 28:18-20) is the church's marching orders until Christ returns: go, make disciples of all nations, baptize them, and teach them to observe everything Christ commanded. This is not optional. It is not one ministry among many. It is the reason the church exists on earth rather than being immediately taken to heaven at conversion.
Biblical missiology is built on the exclusive claims of Christ. Jesus said, "I am the way, the truth, and the life: no man cometh unto the Father, but by me" (John 14:6). Peter declared, "Neither is there salvation in any other" (Acts 4:12). Without this exclusivity, missions becomes a cultural exchange program. With it, missions becomes the most urgent enterprise on earth.
📜 Webster 1828 Definition
This academic term did not exist in 1828.
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"Missiology" as a formal discipline emerged in the late 19th and early 20th centuries. Webster 1828 does not contain this word, though he defines MISSION as "a sending or being sent; particularly, the sending of persons to a foreign country, authorized to transact business of an important nature, more especially to propagate religion." The concept was alive and well in 1828; the academic study of it came later.
📖 Key Scripture
• Matthew 28:18-20 — "Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost."
• Acts 1:8 — "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."
• Romans 10:14-15 — "How shall they hear without a preacher? And how shall they preach, except they be sent?"
• John 14:6 — "Jesus saith unto Him, I am the way, the truth, and the life: no man cometh unto the Father, but by me."
⚠️ Modern Corruption
Modern missiology has replaced gospel proclamation with social justice and interfaith dialogue.
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Modern missiology has been hijacked by two forces. The first is the social gospel, which redefines "mission" as humanitarian aid, community development, clean water projects, and poverty alleviation — all good things, but none of them the mission. Jesus did not say "go build wells in all nations." He said "go make disciples." When the church replaces proclamation with social services, it becomes an NGO with a cross on the building.
The second corruption is religious pluralism — the idea that all religions lead to God, or that Christianity's role is to "dialogue" with other faiths rather than call people to repentance and faith in Christ. The World Council of Churches has led this charge, redefining mission as "God's work of reconciling the world" in a way that carefully avoids the scandalous exclusivity of Jesus' own claims. If everyone is already on their way to God, why send missionaries? This theology kills missions at the root.
The result is that the Western church — once the great sending engine of global Christianity — has largely stopped sending gospel missionaries and started sending volunteers on short-term "mission trips" that are little more than spiritual tourism with matching T-shirts.
Usage
• "Biblical missiology begins with a simple question: Are people lost without Christ? If yes, then missions is the most urgent work on earth. If no, then close the seminaries and send everyone home."
• "The Great Commission is not the Great Suggestion. It is a command from the risen King, and it will not be fulfilled by building wells and taking selfies."