There is no scriptural model or basis for ‘membership’ in an individual congregation, nor is there any basis for denominating individual congregations by name or by set of beliefs for a larger ‘denomination’ as a whole.
The modern idea of the Church has long ago strayed from the examples given to us in scripture and has become more of a club, full of tradition. Decisions are made based upon membership roll numbers and the budget, made necessary in order to keep the physical plant in operation. An individual member’s status in the community outweighs his reflection of the Character of Christ. What has become known as worship has less to do with crying out to God for repentance and praising Him for the same than it does an appearance of a showy performance, making sure everything looks and sounds just right. Preaching is given as the main part of our ‘service’, which may or may not be doctrinally sound, followed by an opportunity to get a flushot for salvation afterward. No true repentance, no understanding of true salvation, and certainly no testing of ourselves against scripture to make sure there is evidence of salvation. I don’t even have to mention the lack of discipline, individual or corporately.
I say that the above is the modern idea of the Church, but it is most certainly not the Church.
I realize that these are rather harsh sounding statements. I do not write them because I have been harmed by anyone. I am simply following the urge that I feel God has placed inside of me for calling out His true bride, as well as leading my family in the calling that He has placed on us.