Why do the ritors ask for Justice?

[Thumpalumpacus]

.... along with any oaths used in wtate ceremonies which explicitly reference a deity (eg so help me god).

Isn't there a provision for a secular oath? I mean, the default in my country is also religious, but if you claim to be a non believer, they make you swear without any god. Especially at court.

The technical term is "affirm". It's how I swore into the Air Force ("I do solemnly affirm ..."), and how I've sworn testimony in court.

One is not required to acknowledge any faith in order to give oath here.