Things to think about

Economic growth by State - click to enlarge
Source: Bureau of Economic Analysis

non-Christian religions by County - click to enlarge
Source: Association of Statisticians of American Religious Bodies

If I compare the two maps I find that there may by some correlation between the two.  Sometimes.
Other times they are just two completely different things.  But, in more diverse areas the GDP improvement is positive.  Think about it.  Write me, in the comment section below.