I see one that has an interpretation impressed on it that is inconsistent with he rest of the scriptures.
This is not arguable.
I have no idea what you're trying to say. If the Kingdom of God is within an individual, that is all that is needed for the individual, and that individual is the only one who can reach it for himself.
This sole scripture completely leaves out the church as any kind of authority outside the consent of its own membership.
It is not a "notion", unless all the other things Jesus said plainly and clearly are "notions", including your perceived meaning of Matthew, which, by the way is not rendered likewise on any other Gospel.
The Catholic is certainly free to regulate the ones who consent to its authority. Beyond that it is powerless.
Has my statement that it is a waste of time trying to reason with invested Catholic come true yet? You have a bull in your bedroom. It does no good to deny it is there.