[D-fendr]

If scripture alone were entirely sufficient...which It is

That doctrine is not in Holy Scripture, so it fails its own test.

It's also not possible in practice of determining doctrine. You take the place of the Church in determining doctrine on your own authority or according to your own tradition.

[Resettozero]

You take the place of the Church in determining doctrine on your own authority or according to your own tradition.

Since I perceive you mean only the Roman Catholic "Church", you are correct. It's my decision to make and I've made it. I trust in The Lord Jesus Christ alone and not in men who I do not and never did know.