There’s an interesting conversation going on over at Eric’s about Radical Orthodoxy and whether someone like Jim Wallis represents a “Constantinism of the Left.”
I have trouble coming to grips with the argument because I think the “sectarian vs. Constantinian” debate rests on a false dilemma. In fact, I’d go further and say that they are in some ways two sides of the same coin. Both seem to think that the Kingdom can be realized in a present social configuration; for one it’s the church and for the other it’s society at large (“Christendom”).
By contrast, I would argue that something like Luther’s “Two Kingdoms” is an inevitable part of a viable Christian social ethic. “Two kingdoms” can sound like a static notion that rigidly separates the church from the world; a better way of thinking about it might be to think of it as the two ways in which God governs the world. There is no “secular” space from which God is absent – rather God is everywhere dynamically present in the care and redemption of his creation.
In the church God reigns through the proclamation of the gospel and the administration of the sacraments, freely bestowing his grace upon sinners. In the world God reigns through his law and the so-called orders of creation – the spheres of life that provide a certain degree of order and justice, making human flourishing possible despite sin. This is the political, or civil, use of the law.
In this perspective, one of the duties of Christians is calling the secular authorities to account when they fail in their appointed task of securing justice in this age. The role of the authorities is not to usher in God’s Kingdom, which comes in God’s good time and not through any effort of ours. In that respect, the “Constantinians,” whether of the Right or Left, are mistaken in their desire to create a “Christian” social order (I’ll leave aside the question of whether it’s accurate to describe someone like Wallis as “Constantinian”).
However, the sectarians (for lack of a better term) are, I think, mistaken in setting up such a stark church-world dualism. They seem to want to make the church into what Gerhard Forde calls an “eschatological vestibule” – a polis unto itself that embodies the Kingdom. The church is not necessarily more virtuous than the world, but lives entirely by grace. And like the surrounding social order, the church belongs to “this age” and is destined to pass away.
The church does better, I would say, to equip its members for their various vocations in the world rather than trying to replace the structures of the world. The key here is that because Christians know they are justified by faith, they are then turned back out into the world, free to serve their neighbors.