Something to do with Easter, surely.
Unfortunately, Cameron rather bungled it this year by not actually mentioning the Resurrection, but simply waffling on about Christian values, which are apparently "responsibility, hard work, charity, compassion and pride in working for the common good and honouring the social obligations we have to one another, to our families and our communities." Which are wonderful values, but not exclusively Christian.
Dave has now come up with a more profound list of Christian values, which he will mention in a greeting at Christmas. These include:
Brushing your teeth after meals;
Changing your socks daily;
Having a bath once a month whether you need it or not;
Helping little old ladies across the road, whether they want it or not;
Fastening your seat-belt in the car;
Voting to remain in the EU;
Supporting same-sex marriage.
After all, Christ and the disciples spoke of little else, did they?
"Blessed are ye if ye eat five portions of fruit and vegetables each day."
Meanwhile, I've been studying the Catholic list of corporal works of mercy in order to get further ideas. I'm not very good at most of them, but "Bury the Dead" is one where I do score highly: when my aunt poisoned a couple of visiting Jehovah's Witnesses last week, I got them underground before anyone could ask any embarrassing questions. However, in general I'm better at the spiritual works of mercy, which include shouting "heretic" at my neighbours.
Remember: Jehovah's Witnesses are best in acid soils, political canvassers in alkaline.
I hope this helps, Dave.