I was thinking today (again, for I may well have already written something similar before) that if one word of Christian theology has any chance to survive into (and, perhaps, past) the so-called "post-modern" era that would probably be "grace".
I wrote "word" rather than "concept" or "notion" because "grace" is not easily reduced to a single meaning. In the Bible the Hebrew and Greek words usually translated as "grace" ("undeserved kindness" in the NW overTranslation) happen to fall both sides of an unlikely semantic "border," between aesthetics ("grace" = "beauty") and ethics ("grace" = exception to, or excess over, "justice"). And in Christian tradition too the idea of "grace" has been construed in a number of ways. Along with "faith," opposed to "Law" and its "works" in the Pauline and post-Pauline literature; along with "mercy," "forgiveness" and "generosity" (including the rejection of judgement), as fulfilling the Law (by "excess," as it were) in Judeo-Christian material such as found in the Gospel of Matthew or the epistle of James. As a broader equivalent of "supernature," opposed to (mere) "nature" and "reason" in middle-ages theology (especially Thomas Aquinas). And a different mix of the above in the Protestant and Catholic theologies of the modern era, both of a rationalistic and anti-rationalistic kind.
It seems to me that "grace" is still oddly relevant to the current philosophical context. It has successfully adapted to the paradoxical and dialectical trends in 20th-century theology. It is not tied in, imo, with the notion of a personal "God" -- it can be construed as a paradoxical "law" which subverts or exceeds the usual notions of law (in both a rationalistic and economical sense), so as to integrate the "absurd" and "groundless" aspects of human "reality" which existentialism has put to the fore. It can equally adapt to the lack of signifié which post-structuralism evidences. It can be a word for the "gratuitously cruel beauty" of life and being as we now tend to perceive it. And I would surmise it could even play an important role in the next pendulum shift toward a fresh, supra-rational "ecstatic objectivity" possibly lying ahead of our current solipsistic fascinations.
Amazing grace... do you like it? Why, or why not?