Depends upon your definition of oath
I use "oath" to mean invocation of a higher power (i.e. patron), usually to imply sanctions if the expressed contract is broken. "I believe X to be true," doesn't often include such an oath. "I believe in person X" might, especially if they are seen as that higher power. *Long* before Kant or even Linnaeus' assertions about taxonomy, common wisdom assumed a thing's name was coterminous with the thing itself, hence the language about taking action "in the name of" someone else. Or take the verses about "I was baptized by Paul, Apollos", etc, concerning which Paul has to take pains to make clear that such intermediaries are not going to be a part of this new covenant.
Many fears are born of stupidity and ignorance -
Which you should be feeding with rumour and generalisation.
BOfH, 2002 "Episode" 10