Keep displaying your own invincibility in the same? well that, and much else...
[yes I realize that's getting personal --- but you started it, so no whining]
As was pointed out, there is no mention of things he (Christ) said not being "written down".
The notables from amongst the early church defeated various gnosticisms, by use of scripture, using what had been written down, not by substitution of some vague allusions to esoteric knowledge that they themselves had had transmitted to them...that is, until within Tradition™ itself, by dribs and drabs, and subtle shifts of definitions & applications, that very thing can be seen to have developed.
You want to split atoms between words and actions? I wonder what counts for more.