Give me an example of a church doctrine that wasn’t always a doctrine of the Catholic Church at that time (doctrine, not abuses...which are two different things).
Give me an example of a church doctrine that wasn’t always a doctrine of the Catholic Church at that time (doctrine, not abuses...which are two different things).
The pope as de jure ruler of the church.
Transubstantiation.
The Mass as a propitiatory sacrifice.
More recently, papal infallibility, assumption of Mary. If there really is a faith delivered once for all to the saints (Jude 3), then doctrine cannot change.
And let’s not even get into justification by faith alone or sola scriptura :)