Having begun his career with positive songs that affirmed his Christian faith, the Welsh singer’s music has become more nuanced. The self-proclaimed ‘liberal backslider’ talks to Alison Hilliard about his journey from answers to questions through his favourite Bible readings, read by David Suchet. He explains how a trip to Thailand and some preaching on John the Baptist turned his world ‘from black and white to full colour’, and his feelings about criticism, and even a death threat, from some Christians.