A performance is only as good as the audience you are playing to. A lot of times you feed off of the audience, and we always try to give them all we've got and sometimes you don't get a lot back, but we've never been dead whenever we've performed.
Demography is changing us as we are older societies, we're living longer. How the generations balance each other out, how that affects education and health care.
Christianity emerged from the religion of Israel. Or rather, it has as its background a persistent strain in that religion. To that strain Christians have looked back, and rightly, as the preparation in history for their faith.