"The Nation of Israel was never meant to be Catholic (spread throughout the whole world), but rather Kodesh (set apart). But if that which was Kodesh became scattered to all the nations of the world, and was then redeemed without yet being restored, then would not they be Catholic in their Kodesh status?"
(The Book of Jesse, Saying 29)
I believe this is why we are to be IN the world, not OF the world. We are a Kodesh (set apart) people that has been scattered to the ends of the earth (Catholic).