Wrong....
…2 Peter3:15and regard the patience of our Lord as salvation; just as also our beloved brother Paul, according to the wisdom given him, wrote to you, 16as also in all his letters, speaking in them of these things, in which are some things hard to understand, which the untaught and unstable distort, as they do also the rest of the Scriptures, to their own destruction. 17You therefore, beloved, knowing this beforehand, be on your guard so that you are not carried away by the error of unprincipled men and fall from your own steadfastness,…
Peter viewed Pauls letters as scripture as they were written...
You belive in Scripture, correct?
Then why don't you believe this?
John 21: (We'll be using the KJV today to keep things on even footing): "And there are also many other things which Jesus did, the which, if they should be written every one, I suppose that even the world itself could not contain the books that should be written. Amen."
The Bible Itself declares that it doesn't contain everything.
John 20
30 Now Jesus did many other signs in the presence of the disciples, which are not written in this book;
31 but these are written that you may believe that Jesus is the Christ, the Son of God, and that believing you may have life in his name.