It is a fatal flaw of those suckled on the heresy of the ultimacy of political solutions to suppose that Christ's kingdom will progress mainly by means of politics. It will not. It will advance mainly by the operation of the Spirit in the lives of increasingly sanctified, law-keeping Christians who practice their Faith in family, work, school, church, and all areas of their lives. Fathers inculcate the orthodox Christian Faith into their families. Pastors lead their flock into greater obedience.
Educators instruct their pupils in terms of a comprehensive Christian life-system.
Churches revive the diaconate and care for the sick, the needy, the widow, the orphan. Entrepreneurs create wealth by starting new businesses that benefit others. And on and on in all spheres. To surrender politics, or any other legitimate sphere of Christian activity, to the Devil and his disciples is an evil tack. But establishment of an explicitly Christian state will be the effect of broadly based Christian faithfulness beginning with the regenerated individual and family and reformed church.