They come under heavy persecution and have had survive almost 1500 years of constant attack.
They were persecuted by the Western Church (early Roman Catholicism), abandoned by the Eastern Church, and eventually persecuted by the Muslims with heavy taxation, beatings, and martyrdom.
The term “Pope” which was derived from the Greek word “Papa” or “Pappas” was not used until the late 2nd and early 3rd centuries to denote the premier Bishop or “Father” over all Bishops.
The idea of an emerging, strong, and centrally governed church was taken even further by Augustine, a Bishop of Hippo.
John Hus, and others would be labeled “heretics” and would be martyred for their boldness.
To further assert authority over the masses the doctrine of Papal Infallibility would be added to this list of errors.