You've become enraged by his choice of words and not his statement of faith. At least, I hope that is the case.
In our government, we are ruled by the elected and those who elected Robert Bentley are presumably Christian. I presume this because Robert Bentley is an outspoken Christian - always has been - and surely those who voted for him understood his platform and history.
Therefore, it is entirely plausible and acceptable for him to continue being an outspoken Christian.
Thoreau is one who states that the majority should look out for the minority; however, the majority does not have the obligation to change their stance and views in order to coincide with the stance and views of the minority. I agree with that statement, and I think that is how Bentley is choosing to govern.
It's not that he is hindering the lifestyle of those not of his religion, but he is attempting to satisfy the desires of his voting public.
His choice of words were weak. I'll definitely admit that. "Brothers and sisters" and "saved" and "holy spirit lives in me" are all common phrases from a particular charismatic group of protestants. It's jargon that does not bring in nonbelievers but rather pushes them away much like the original poster of this thread.
Consider if Bentley had said, "I am a Christian, and I believe only those who believe in Jesus will go to heaven. Therefore, I hope and pray that everyone associated with me and my governing district will one day believe in Jesus."
Would anyone really have a problem with that? Would that be wrong and intolerable?