Cardinal Peter Turkson has clarified his comments about "birth control" in a recent BBC interview. The Archbishop of Canterbury, Justin Welby, has named Cardinal Nguyen Van Thuan as his personal hero. Cardinal George Pell will give evidence at an Australian abuse inquiry in February, two months later than planned, after his lawyer said the Vatican financial czar was suffering from a heart condition. John Allen says a new Vatican document on Catholic-Jewish relations "shows just how far we’ve come". Cardinal Gerhard Müller shares his hopes for the Year of Mercy. Fr Ray Blake urges Pope Francis to abandon fossil-fuelled transport altogether and ride only in electric cars. And Thomas McDonald recalls the peculiar medieval Christmas custom of boy bishops. Follow me on Twitter @lukecoppen for updates throughout the day.