Lent, and Lenten reading, will soon be upon us. This year has the usual crop of new titles, both predictable and unexpected.Graham Tomlin’s Looking through the Cross (Bloomsbury, £9.99; Tablet price £9) is the Archbishop of Canterbury’s Lent Book for this year. Tomlin begins by distinguishing “looking at” from “looking through”. He first looks at the Cross, then through it, like (in his not wholly felicitous image) a pair of spectacles, of which we are unconscious yet which both enable and shape what we see through them. He looks in this way at various themes: wisdom, suffering, power, identity, failure, reconciliation, life. This is solid if slightly old-fashioned Protestant exhortation; his great authorities are Luther and St Paul. To thos