1. It is the recognized source of morality that the Founders used to write the supreme law of the land.
Nonsense. Montesquieu and Locke had far more influence on the foundations of our government than Christ. What in the Constitution comes from Christ? Sorry, but I don't recall where he gave lectures on how to form a government.
The Bible is not THE source of morality. It is a source for people who can't think very well and need to be threatened with threats of eternal damnation.
Honestly, it is a pretty horrible moral code (see my Twain quote).