Right - and actually, why do people submit to swearing on the Bible anyway? Jesus taught not to swear on anything holy but to let " your communication be, Yea, yea; Nay, nay: for whatsoever is more than these cometh of evil" (Matthew 5:33-37)
I have often wondered what I would do if I had to testify in court and was told to swear on the Bible.
I’ve heard of cases (second hand) of people with strong Christian beliefs being allowed to simply make a statement that what they say is true, based on that verse.