There are some dynamics that need to be considered before making a final judgment on church membership.
1. There is no argument among believers regarding who is a member of the universal (catholic) church. All true believers are members of the church, which is Christ's body.
2. As the early New Testament church began to grow, invariably it met with dissent, discord and growing pains. Jesus warned the church of Ephesus that He would remove their lamp stand if they did not repent. They didn't and their lamp stand was removed. Obviously there was validity to local churches.
3. As the universal church grew, more and more local fellowships would be created. This was (and is today) a reality of more and more believers being added to the universal church.
4. With rise in power of Romanism, dissent was driven underground except for some notable exceptions. It was the Reformation that broke open the floodgates of denominationalism and modern day church membership.
5. Even in the early years of the Reformation there was discord. Zwingli vs. Luther is one example. While the Reformers were united in their opposition to Romanism, they also turned their attacks on each other. The early Reformed churches splintered and re-formed into various denominations. We live with their remnants today.
6. With so many different denominations, and with multiple churches (within the same denomination) in the same vicinity, membership (as we know it today) became necessary. Without a commitment to a local body there could be no accountability. With no accountability church discipline would be rendered ineffective and obsolete. Not happy with your current church? No problem, just start attending another church. To be sure, that happens today. But church membership formalizes the commitment an individual is making to a local fellowship.
Is church membership (as we know it today) biblical? If by biblical we mean a chapter and verse, then I would have to say "no." But does modern day church membership violate biblical principles? I don't think it does. I believe it is a logical and necessary accepted practice that is a direct result of the deep doctrinal differences between churches.
