Sorry, but I take slight offense to that statement.
I am not religious, but I can READ and FOLLOW the Constitution. Being a (L), I’d say I follow it more-so than the (R) [I’ve yet to understand just what Conservatives are conserving....the NEW big gov’t (today) or the OLD big gov’t (191x)]. There are plenty people of religious background that would use the power/force of gov’t that would run counter to the Constitution.
It is those who understand what Life, Liberty and Freedom MEAN, not by words, not from their religious dogma, but by actions. Gov’t is primarily instituted to protect our Rights, but I see very few championing that job.
"Our Constitution was made only for a moral and religious people. It is wholly inadequate to the government of any other." John Adams