I remember the very first post we exchanged. It was about the TRUTH. And here we are today, discussing the TRUTH. It obviously means the greatest thing to both of us. As it does for all, I'm sure. There can be no ultimate TRUTH if there is nothing unchanging and everlasting by which to measure it. It cannot be trusted to man's opinions, which change, are limited, and finite. That leaves one place: God's Word. If A TRUTH is desired, look to man. Man intuitively knows a truth from a lie. Whether he chooses to believe it is another story. But THE TRUTH. The sum total of all God would have us know. And has given to us. That can only come from God.
"All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: That the man of God may be perfect, thoroughly furnished unto all good works." 2 Tim. 3:16,17.
The sum total of all God would have us know, in order to have THE TRUTH which is for righteousness and perfection is to be found in God's Word. Plus nothing.
Why do you suppose that nearly every Protestant apologist would want you to believe that "profitable" in this verse actually means sufficient or exclusively sufficient and not merely useful? Are we to believe that St. Paul was saying that one must find Scripture either absolutely all inclusive or completely rejected?