I never been to court...but if I did...I would just say "Scouts Honor!"

We with Quaker roots say "I affirm"

Even though they are an atheist, they don't have any choice but to swear on it. -Engr. James Paul

Too funny! I've wondered the same thing myself. If I were to say, so help me god, I would already be lying.

...but do they use the term "so help me god"

We ask to swear on the constitution instead because it actully is what we should be swearing on in court anyway. ???????????

I find it ironic that believers will swear on the Bible when the Bible itself reads not to swear on anything; a person's word is supposed to be sufficient. I would not swear on one as it implies it is some standard of truth and that I fear punishment from some god if I should lie. Instead, I would swear/affirm "under penalty of law" to tell the truth.

I've testified in court a few times and in Michigan I have not has to swear to God or place my hand on a Bible (although, I was ready to protest). If ever I was asked to swear to God on the Bible I'd refuse first. If they insisted, I would simply state then that my testimony would be only as factually credible as the book they were expecting me to swear upon.

So far as I can tell there is no need to swear an oath. The law obligates you be truthful in your testimony regardless. So why should I have to make any claims about my testimony? Who knows?

Interesting question. Never been in the position.

I would just bullshit and do the bible thing as it can only help you in that situation. it won't change what I believe, however. ill chose bullshit to save my skin anytime just like anyone.

I can't speak for anyone else here but if I were to be sworn into court I'd simply request to be sworn in with a book of laws rather than the bible.

Some information on affirming vs. swearing:
[thoughtco.com]

Ya, I did that to get my first marriage certificate (not court, but still a legal thing). The dude then had us read a non-religious attestation that the facts we were presenting were true.

Wow! Do they still do that? Hmmm...