I don't understand why you want to spread it anyways.
Everyone who isn't an atheist is obviously 'less evolved' and can't be macroevolved just by converting.
Just let people belive what they want to belive and they can die from 'natural selection'.
You don't die from natural selection, dying causes it.
Those that survive are stronger, pass on those genes, thus advancing a species. Those that don't have the genes to survive are eliminated from the gene pool, helping a species survive in a way. You don't understand evolution whatsoever, shut up.