” I am a hard Scripture alone Christian”
ok, you better cut this out of your Bible -
2 Thessalonians 2:15 “so then, brethren, stand firm and hold to the traditions which you were taught by us, EITHER BY WORD OF MOUTH OR BY LETTER”
some of us have chosen to stand firm.
Please present the evidence that what was received by word of mouth was never written. There is no such evidence but we do have the Acts of the Apostles. So if a tradition by mouth "missed" mention in an epistle, we should search the remainder of the NT to include actions (Acts) to see if we missed something.
All your "by mouth" claim attepts is to downplay the authority of the NT scriptures.