The Second Amendment of the United States Constitution reads: "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."   Hmm not a word about God standing on your right to bear arms.   The founders did say god given right to pursue happiness, but how is that applied? 

Your happiness may be shooting cans of a kids head (exaggeration), but it won't make the kid very happy.   Weapons are often used to enforce the will of the holder who could care less about his target or their happiness.   The constitution was never meant to fulfill one personal happiness at the expense of other Americans.

It's tiresome to hear people hide behind what they believe the constitution says.   It is fully a human document, not inspired or written by God.   Several of the founders had at best a shakey relationship with both religion and church.   I use Jesus as a model and he was clearly non-violent.