A Christian spiritual walk is needed before one can grasp the bible in an advanced way. So much of that book is not about knowing about things, but about living out things. About certain ways that our spirits operate with respect to God and believers and indeed all mankind.
So the Catholics are right that there has to be a context. Whether their denomination as it stands, with both its saints and its sinners, comprises the only useful (or even the best) context, is quite a different question.
Dry biblicism is always a hazard. If Catholics and Orthodox cluttered up the bible with traditions imagined by men, sometimes Protestants overreacted in the other direction and rendered it contextless. If you aren’t seriously worshiping with your life, with the Lord in mind in everything you do, much of the bible won’t even make sense.