First, a church that you base your life decisions is not a church, it's a cult. If they're good people, which I would think they are, I'm sure they would want the best for you and your family.
Secondly, you forgot an important Pro: The fact that you have a boss that thinks enough of you to make the offer in the first place, and the fact that your boss has the position in the company that he does.
Mikeatpri has it exactly right though, go or stay are not your only two choices.