And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth. 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: and, lo, I am with you alway, even unto the end of the world. Amen.
That is why this church exists. You have been placed by God in your community to evangelize your community.
For me to say that our main mission is evangelism is the same as saying our main mission is to glorify God. The two are not contradictory; they are not two distinct statements but are one in the same. This is because nothing so much glorifies God as His gracious and merciful redemption of hell-bound sinners! Christ said to the Pharisee Nicodemus…
For God so loved the world, that He gave His only begotten Son, that whosoever believeth in Him should not perish but have everlasting life. For God sent not His Son into the world to condemn the world; but that the world through Him might be saved. (John 3:16-17).
The main mission of your church (and every church) is to love, learn, and live so as to call sinners to Jesus Christ, because God is glorified every time an unbeliever is saved by His amazing grace. The Lord said in Luke 19:10,
“For the Son of man is come to seek and to save that which is lost”.
Our main mission is not fellowship, otherwise God would instantly take the saved to heaven where fellowship is perfect. Our main mission is not learning. If it was then God would immediately take us to heaven where God’s word is perfectly known and perfectly understood. The main mission is not praise. Heaven will be the best place for that too, the place where praise is perfect and never-ending.
There is only one reason we are here, and one reason alone. Our one reason, our main mission is “to do the work of an evangelist.” Frankly, if we're not doing that, we might as well be in heaven. If the church means for you just a place for fellowship, or just a place to come and soak up information, or simply a place to sing nice songs and praise the Lord, then you are failing to help this church accomplish its main mission.
Fellowship, teaching, and praise are essential parts of the preparation and the training for the main mission. Think of it this way; an athlete trains hard for his event, but the training is not to be confused with the running of the race. All the exercise and preparation you go through in your education is not to be confused with succeeding in your profession, and when the church meets for fellowship, teaching and praise, we are preparing for the running of the race and winning of lost people to Christ.
That is our main mission. That’s why we are here.