There you go, someone telling you what something means not allowing for others to prove a thing to see whether it be true. I would agree with that.
I agree, Interpretations belong to God and no man knows the thoughts of God save His Spirit alone. Neither can any man know them without the Spirit. So its false to say someone rules "interpretation".
Proving oneself (and to oneself) unto God (not unto men) is where its at (at least to me).
Jesus Christ is proven in scripture

The doctrine of Christ (which is after life and godliness) being abided in (in truth) would be evidenced by the fruit of the Spirit increasing in ones life. God has given us the "power to become" the Sons of God.
Unless ofcourse, they are useless doctrines of men extracted which affect nothing concerning the faith, hope and life in Christ. The same ol' form of godliness denying the very God given power of it.
Its good to prove a thing, the Bereans were commended as more noble in so doing.
Peace
Fireinfolding