I Swear on a Bible

So, again, I'm posting what I just wrote - not terribly successfully - for Helium.com The question was - should we continue to swear on a Bible. My opinion follows:

I recently heard that a woman was not allowed to use the Koran when she was sworn in during a court case. Of what value is it to have her use the Bible if the Bible has no meaning for her? But more importantly, why do we use religious books at all in the court? Perjury is not revealed through Divine intervention. Does God declare us honest or false? What we are truly trying to do is uphold the tenants of our form of government. And considering we are meant to have a separation of church and state, would it not make more sense to have people swear on the Constitution? The Constitution is the foundation of our country. Our legal system stems from the principles it espouses. It is non-denominational and applies equally to all citizens. When someone is found guilty of perjury, their real crime is not against God, but against the state, undermining the justice system. They are discovered not by the hand of God, but by fellow citizens. Therefore, the Constitution would be the most appropriate document for swearing-in ceremonies and in courtrooms as what we are actually asking is that people tell the truth as part of their responsibility to the country.