I used "post-Christian" with Gary Cameron of IVCF at our Friday morning breakfast, in referring to our culture. He prefers "post-Christendom" rather than "post-Christian." Is that a distinction with a difference? He thinks so. Does "post-Christendom" refer to a loss of cultural hegemony, where "post-Christian" simply means the culture no longer has a certain proportion of Christians in it? I'm not sure about the distinction.