If you do not know which humans and/or which denomination most accurately teaches Apostolic doctrine, then you must not know what is the Apostolic doctrine, because if you truly knew the Apostolic doctrine, you would be able to say which humans/denomination comes closest to "getting it right", as Dr. E. says. But it appears that you don't know if the Pentecostals are closer than the Baptists, or the Presbyterians are closer than the Lutherans, or the Anglicans are closer than the Methodists, or the Mennonites are closer than the Seventh-Day Adventists, etc. Regarding such questions, you seem not to know the answer.
So for all you know, (so far as I can tell from your answers) the Catholic Church might be the one most accurately teaching the whole of the Apostles' doctrine.
-A8
Don't look at the pen, look at the Shepherd. What He tells you to do, do it.
As P-Marlowe has explained, He has sheep in most every pen who hear Him and follow Him.
It is not "about" the pen.
I will say however that those sheep and their pens which have obstructed the Shepherd are in deep Spiritual peril.
Hyper-denominationalism as xzins calls it leads to spiritual darkness. So does idol worshiping which includes lifting up ones self or another sheep or a fabrication of any kind equal to or above God.
But if the sheep hears and obeys the Shepherd's call - no matter how badly the pen might be built - he will be ok.