A theocratic state? I think history has demonstrated quite amply how those turn out. I'm sure theocracies start with the very best intentions (they need them to help pave the road), but they pretty universally end up as 'not good'. Even Buddhists have managed to screw up theocracy. I think a dead cert is the removal of evolution from the curriculum, the teaching of Flood geology and banning of abortion would follow.
As with any other theocracy, personal freedom would be quickly eliminated. I wouldn't be surprised if Islam was effectively banned in this state. I'd imagine that before the problems got a lot worse, there would be a schism and the country would collapse into bickering over denominations before finally some bright spark decides to create a country where the state doesn't get directly involved in religious business.
It would be a united collection of pocket empires, only without the religious implication of an imperium. Make it a federal republic with a president. Eventually the religious bickering will flare up again, and so the wheel turns.