I want to know why u believe that ur denomination is the way to get to heaven
or why ur dogma is the correct or why ur church is THE church…QUOTE]
Speaking as a former Baptist - - -
Most low-church Protestants do NOT believe that their denomination is The Church or The Way to get to Heaven. Important aside-we don’t actually believe that the Church is the Way to Heaven, as Jesus taught that He is the Way, the Truth and the Life-what we believe is that He entrusted this treasure to the Church and She is the normal method of incorporating us into His Body) Most protestants simply do not have that kind of ecclesiology at all, and would in fact deny that Jesus established a visible Church. Rather they will tell you that the Church is invisible, made up of all those who are saved (some but not all would add baptized).
Most Protestants (even Lutherans and Anglicans, who do have an ecclesiology) choose the local “church” community they join by a process of attending numerous local churches until they find one where the teaching matches what they already believe and the style (eg. form of worship, availability of social activities, youth ministry, etc) suits their taste/lifestyles/needs. This is a deeper process than the parish-shopping some Catholics do when they move, as the low-church Protestant communions are locally autonomous and thus the theology can vary dramatically from one congregation/preacher to another, even if they are nominally part of the same denomination.
My own parents (who were converted from mainstream non-personal Christianity at a Billy Graham crusade) were Covenanters when I was born but by the time I was old enough to form memories they had moved and become Baptists. Later we moved again and they found an evangelical Congregational church which they joined, although I found a Baptist church in the next town where I was more at home – until, praise be to Our Lord, I stumbled over the Rock and began my journey Home to Rome. . . .