"Peace, justice, love, freedom — are they to be
regarded as elements of the common good, or are they restricted only to
those who profess faith of God and membership in His
distinctive/restrictive Kingdom?"

In the timeless words of Alasdair MacIntyre, "whose justice? which rationality?"

Peace? How? Through violence? Through Gandhian principles? Justice? Whose ‘justice’? Love? What on earth is that apart from how it is understood within a specific tradition? Freedom? Freedom from authority? Or freedom to pursue the good? Which good?

If the Church exists for the Church, then yes, Christian exclusivity will inevitably appear problematic. Although to be fair, even the Amish are admired and respected, though perhaps not understood, by the ‘wider world’, in spite of its abandonment by them…

But as far as I understand it, the Church exists, among other reasons, to serve the world. That service will of course be informed by its understanding of who God is, but the point is that the Church should not be only inward focused (though of course, neither should it be only outward focused, as if that were possible). And service as ‘power under’ is antithetical to coercion and war (as ‘power over’). The Church serves the world by imitating Jesus, who absorbed its wickedness and violence into his own flesh without retaliation. Hardly the picture of a crusade, wouldn’t you say?

One more distinction: the Church is not the Kingdom. The Kingdom ‘happens’ as it were, whenever God’s will is done. And that doesn’t need Christianity to happen. The Spirit blows where the Spirit wills… The Church is of course called to point the way to the Kingdom, to show the world what it might look like, but it has no monopoly on the Spirit.

My two cents…

 -Daniel-