You're giving testimony in court, or maybe you're assuming public office.

In both cases, it's customary to swear on a holy object.

So, Pagan: on what do you swear?

Strike me dead if I'd swear on one of their accursed books.

Strike me dead if I'd swear on a book at all.

In the old days, there were statues of the gods in law courts for people to touch while taking their oaths. In these barbarous days, a small one would do, I suppose: provided it were handled with respect.

You can swear on the coven sword, I'm told. (An Alexandrian trope, I believe.) Good luck with the metal detectors.

Me, I'd swear by the Oldest, as our people have sworn forever.

So witness Earth (bend and touch her).

So witness Sky (raise hands).