These are the fundamental point of difference between Protestants and Catholics.
The priesthood of all believers. According to Protestant doctine, ministers of religion have no special power or authority that is not available to everyone else. Catholics maintain that priests are the heirs of the Apostles, and were indirectly appointed and authorized to perform special functions.
Justification by faith alone. Protestants maintain that belief is the sole criteria for salvation. While good behavior is a logic consequence of belief, it is not of any value. Catholics have a different position on free will that enables them to say that good works and holy living are spitirually valuable.
This is all old stuff, going back to Luther and Calvin.
You know, Luther and Calvin, The cartoon's peeing on Chevy bowties on FORD truck rear windows............