Testable

There would be less cancer, less disease, and aids and diabetes in this country if people would simply pray. God blesses the righteous with good health and curses the immoral with sickness. 

--Ted Cruz 

Woohoo! A testable claim. Who wants to join the experimental group? You get absolutely no medical intervention whatsoever but you get tons of prayers via phone, email, snail mail, telepathy and what have you and of course you get to pray all day all night all month and all year till you expire. .