A true straw man argument.
Each of these groups (Protestants, Mormons, JWs, etc.) that claims the others have "fallen away" from Christ's original teachings believes that theirs is the only true way. They do not believe their's is the only true denomination, they believe that Christ set up one true Church, and their's is it.
Each of these groups (Protestants, Mormons, JWs, etc.) that claims the others have “fallen away” from Christ’s original teachings believes that theirs is the only true way. They do not believe their’s is the only true denomination, they believe that Christ set up one true Church, and their’s is it.
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You obviously do not know much about Protestantism. First of all, Mormons and JW’s are not protestants (by their own admission) - also by the Catholic church’s admission and all protestant churches admission.
Secondly, no protestant church believes it is the ‘only true church’. Sorry. Early protestant leaders saw the Catholic church having fallen away from its earlier teachings, but not that a restoration was needed (as if it never held truth) but that a reformation (a return to the church of Late Antiquity) was required. Most of this had to do with serious ecclesiastical issues like simony, indulgences, and political conflicts.
However, I am seeing that you don’t really want to discuss this, your general hatred for protestants (which even the Catholic church doesn’t have) is showing.
“They do not believe their’s is the only true denomination, they believe that Christ set up one true Church, and their’s is it.”
I am sorry but most “Protestants” - Methodists, Episcopalians, Presbyterians, UCC and the like DO NOT believe that “their” church is the “one true Church”.
They accept that most of their doctrinal differences are less than what they hold in common belief, even while they prefer to practice their Christian beliefs in the framework of their own denominations; and they do not - most of them - hold that someone is NOT in the “body of Christ” just because they are part of another denomination.