Goring back to the OP, I'm sorta curious. If one doesn't believe that his denomination holds the truth on everything, why is he still there?
I'm a Baptist. Southern Baptist. I know, there are umpteen kinds of Baptists, and not even all SBC churches see eye to eye. But I do believe that Baptists are closest to being right on those basics by which one would identify them as Baptists. In this cum-bah-yah age, there seems to be some reluctance to say, "what I believe is right, and what you other denominations believe is wrong."
By definition, if you believe something is true, those who see it differently must be wrong. Now we can be nice about expressing that, but it is nonetheless true.
In the meantime, we have the Baptist Board to air differing views on the lesser issues.
I grew up as a conservative Presbyterian, and am now a Southern Baptist. I was a Presbyterian for 25 years, and have been a Baptist for 35 years. Tom and I serve in the same church. We agree on most all issues except for communion, which is another thread.
I look at the hundreds of denominations and thousands of sub groups all coming from the first church in Acts as a sign of man's lack of ability to follow one Spirit. Probably all in existence now are not exactly what the Lord would have in a New Testement church. However, some have to be much closer than others, and I serve in the one that, IMO, comes the closest. Baptists baptize like Jesus Christ was baptised. We do not treat it as a means of salvation, but a symbol of our faith following salvation in Jesus Christ, in His death, burial, and ressurection. I believe the churches in the New Testement to be autonomous. New Testement churches exist to carry out the work of the Lord, telling others about the Gospel, helping those in need, comforting and edifying one another, giving of our time, talents, and money, comforting the sick, praying for others, observing the Lord's Supper, and most of all, worshiping and praising Almighty God. Scripture does not teach we slip in and out of salvation based on our daily lives. Scripture teaches that only God the Father, Son, and Holy Spirit are to be worshiped, prayed to, or thanked for the many blessings He bestows on us. I believe the Baptist faith to follow this the most closely.
How anyone ever got the idea of a hierarcy to run a church, using Baptism for salvation, losing salvation, baptising infants, or rules we have invented like no caffine, no musical instruments, or no contreceptives I will never understand. Whole denominations are based on such nonsense. We have so many theories about creation, end times, dispensationalism, God's sovereignty, etc, that these certainly add to the number of denominations. I have even talked to some people that believe cremation is evil.
By the way, for whoever mentioned Calvinism, that transcends denomination. Look at the differences in our own faith. Where I came from, the Presbyterians, it is not an issue. It is a basic doctrine. I am not going to get into that here, but I do believe in God's sovereignty, but despise the person it was named after. Another thread.
I agree with Tom on this point. If one does not believe in basic Baptist beliefs, that they are as close to the NT model as we are going to get, then why are you still here? I am quite clear in my mind why I am a Baptist and not a Presbyterian. I would seek out a Presbyterian church if there was no Baptist one in the area.
No one has addressed the point, why are there so many denominations. One would think that really off the wall churches like the RCC, Church of Christ, Pentecostal, Seventh Day Adventist, etc have such a warped set of doctrines, that they would not attract enough members to sustain themselves. How can any thinking human being read Scripture with the Holy Spirit residing in him or her, and come to the conclusion that the RCC has any credibility? Where does anyone get the idea that we can lose our salvation, or have to be baptised to obtain salvation? These ideas are so alien that it is a stretch of the imagination to even call them Christian.
One must look at the last 2000 years and wonder why we split so many times when the Lord left us with one church. The Lord promised to preserve His church. I have no doubt He has since His asscension. By the process of elimination, it certainly was not the RCC, for reasons one could write novels on. At the Reformation, several Protestant groups formed different churches, but still heavily influenced by Catholic doctrine and customs. Common sense says none of those groups preserved the church. Nut case groups like the Church of Christ, Pentecostal, Holiness, 7th Day, and more extreme, JWs and Mormons, (cults) are relative newcomers, so they did not. That leaves one conclusion for me. Although not a direct link, local churches of like faith and order to the modern Baptist church, preserved the true NT church of Jesus Christ along side of the Catholics, Anglican, Orthodox or other heirarchical churches connected to political power. The church Jesus preserved went from local church to local church, and today, I believe it to be the Baptist faith. Otherwise, I would not be one.