saying that the religion does not matter is similar to saying that it doesn't matter whether you use a pair of tweezers, a hammer or a gun to remove a splinter from your toe.

if you take a "good" person, and teach them that god will only reward them if they wear a bomb vest into a hospital, and that the same god will torture them and their children for an eternity if they don't, that person will do what they believe they have to.
someone being good or bad is irrelevant, in some cases.