Many Evangelicals (and a majority of Fundamentalists) take the view that the Church went astray after the Apostle John finished writing Revelation around 100 AD, and it just got worse and worse until 1517, when Martin Luther rode in on a white horse to “save” the Church. Everything in between is considered “suspect” at beast and “Papist idolatry” at worst.
Since Luther was the one who came up with the idea that Scripture alone should be the final authority, the Evangelicals and Fundamentalists who adhere to this idea feel if they can just manage to do things the way they were done in “New Testament” days, then they’re getting a “purer, less undefiled” version of Christian practice. The amusing thing is that it took 400 years for the Church to decide what was even going to be
in the New Testament to begin with—a fact that is conveniently overlooked.
Another phenomenon is that of “Messianic” Christians, who are also of the mind that the further back you go, the better, but they’ve taken it one step further and actually gone back to Judaism, albeit with a Christian slant. Their idea of perfection is frozen in time between Jesus calling the first disciple and Paul deciding to evangelize the Gentiles.
The problem I have with both viewpoints is that they contradict Jesus’ promise that He would never abandon us; these viewpoints are similar to the Holy Spirit coming down and saying, “Here’s what you gotta know, make sure you stick to it. I’ll be back at the Second Coming…until then, you’re on your own. Good luck!”, and disappearing.