"God is faithful by whom you were called into the fellowship of His Son, Jesus Christ our Lord." (I Cor 1:9)
You will recall that the church is a group of people who are called out. This is the "negative" aspect of our being called: We are called out of the world. What, then, are we called into. Once the church is "l4ed together into the name of Jesus, what do they do? The answer is that they share Jesus Christ together. Paul put it in this way: "You were called into the fellowship of [God's] Son, Jesus Christ our Lord" - fellowship being the end purpose.
The word for "fellowship" in Greek is another distinctive New Testament word for ecclesia. It, also, is taken from secular language but given a special application. The word comes from a root word that means "to have things in common' or "to share things together." It could be translated, "the sharing together of Christ." This is the supreme purpose and objective of the local church.
Let's look at a similar statement made by the apostle John:
"That which was from the beginning, which we have heard, which we have seen with our eyes, which we have looked upon, and our hands have handled, concerning the Word of life; the life was manifested, and we have seen, and bear witness, and declare to you that eternal life which was with the Father and was manifested to us; that which we have seen and heard we declare to you, that you may also have fellowship with us; and truly our fellowship is with the Father and with His Son Jesus Christ." (I John 1:1-3)
This Scripture tells us why we were given the New Testament record of Jesus. John, one of the writers of the New Testament and a close witness of Jesus' life and ministry, said, "We're telling you what we saw and heard; we didn't just have it in theory. We touched Him. We saw Him in action - the Lord Jesus Christ, the Word of Life. He was made manifest; He was made flesh and dwelt among us. We saw, heard, and observed everything, and we declare it unto you firsthand."
And why was this account written? Why, indeed, was the New Testament record given? "That which we have seen and heard declare we to you, that you also may have fellowship with us" (verse 3). It was given to bring us into the fellowship of the apostles! What is that fellowship? The second half of the verse says, "And truly our fellowship is with the Father, and with His Son Jesus Christ."
The purpose of the writing of the New Testament was to bring those who hear and believe the Word into the fellowship of the Godhead; a fellowship between the Father, the Son, and all who believe, through the Spirit!
Let us look at two more related Scriptures:
"Having many things to write to you, I did not wish to do so with paper and ink; but I hope to come to you and speak face to face, that our joy may be full." (II John 12)
"And these things we write to you that your joy may be full." (I John 1:4)
What brings fullness of joy more than face-to-face- fellowship? Fellowship is meeting one another, meeting God and meeting Jesus Christ. This is the purpose for which God has called us out of the world and into the church.
(Takren from "Rediscovering God's Church' - by Derek Prince - copyright 2006. Ch 12 - "The Local Church" - pg 161-164)