Let's get these concepts out in the open:

A well regulated militia being necessary to the security of a free State, the right of the People to keep and bear Arms shall not be infringed.
     Second Amendment to the United States Constitution

Then said he unto them, But now, he that hath a purse, let him take it, and likewise his scrip: and he that hath no sword, let him sell his garment, and buy one.
     Luke 22:36, King James Bible