His divine power has given us everything we need for a godly life through our knowledge of him who called us by his own glory and goodness.
... does not support your point, because it does not say He has given us everything in writing
Then WHY did your One True Church FAIL to teach the seven churches in Asia correctly?
Weren't the 'sacred traditions' not yet in place?
OK, tell me who (name) founded those seven churches.