…a season of nostalgia, of carols and candles and firelight and happy children. But that misses the point completely. Christmas is not a reminder that the world is really quite a nice old place. It reminds us that the world is a shockingly bad old place, where wickedness flourishes unchecked, where children are murdered, where civilized countries make a lot of money by selling weapons to uncivilized ones so they can blow each other apart. Christmas is God lighting a candle; and you don’t light a candle in a room that’s already full of sunlight. You light a candle in a room that’s so murky that the candle, when lit, reveals just how bad things really are. The light shines in the darkness, says St John, and the darkness has not overcome it.

–  N.T. Wright, For All God’s Worth, p.3