I actually have none. I think if a man will lie, he will do so whether he's held a book or not. I think the idea of swearing on a Bible is odd and, the one time I was sworn in as a witness, I took a civil oath.
The point others were making is that the koran instructs Muslims to lie.
An honest and faithful Christian will tell the truth, even if it is a disadvantage.
A faithful Muslim is compelled to lie by his holy book.