Sure!
Do I believe that any of them might be needed for salvation?
Just like you.
So you do not live by every word that comes from the mouth of God. The scripture doesn’t say written, or important, or necessary. It says ‘every word’. So if you disregard words that are not written in the bible, you are not following the bible.
And I have yet to see the scripture which says that the bible is the only source of truth.
Love, O2