There is another principle in the Word of God that should guide us in connection with the assembly, namely that each assembly is independent and responsible only to Christ. There is no such thing in the New Testament as a denomination, a federation of churches, or a circle of fellowship. There is no headquarters on earth, exercising authority of any kind over local assemblies.
The headquarters of the church is where the Head is -in heaven.
Every local church should carefully avoid anything that might lead to centralized control on earth.
This centralization is the evil that has hastened the spread of modernism. The liberals have seized control of the denominational headquarters and of the seminaries. They knew that if they could control the headquarters, then eventually they could control all the churches.
The formation of a central group often comes from government pressure or from a desire to obtain certain benefits from the government. But then centralization makes it easy for totalitarian governments to suppress the church. If they capture a few denominational leaders, they can control the activities of the entire denomination.
God's will is that each assembly should be an independent unit, responsible directly to the Lord Jesus. This hinders the spread of error, and enables the church to go underground more easily in times of persecution.