The New Testament is the only place to which we can turn to learn about the church of Christ. We recall that the church is described as the eternal purpose of God (Eph. 3:9-11). It is obviously very important. It is necessary, therefore, that we are educated by the New Testament and not by the ideas of men.
The New Testament teaches us what the church is, and what the church should be today, according to the plan of God.
First, the church was built and purchased by Christ (Matt. 16:18; Acts 20:28). No one has the right to start a church as a divinely approved institution (cf. 1 Cor. 1:10-13). Christ, the Son of God, is the only one qualified, and he has established his church (cf. Eph. 4:4; 1:22-23).
After religious division arose within the church at Corinth, Paul asked some probing questions. “Is Christ divided? Was Paul crucified for you? Or were you baptized in the name of Paul?” (1 Cor. 1:13). The church belongs to Christ on the basis of these gospel truths. He died for it. He built it. He lays down requirements through which we can belong to him. The church belongs to Christ. He is the head of the church (Col. 1:18).