It’s December, so I can now allow myself to use the C word! So here is a special Christmas offer. Buy any two of these titles for £10 or all four for £20 and the postage and packing is free to any UK address. To take advantage of this offer, send me a message to email@example.com and I’ll tell you how to make the payment and take your address for posting. And may the light of God grow in your heart as Advent unfolds.