It seems a  long way from Mary Magdalen to farmers’ markets; when you are talking to American director Peter Sellars, the conversation can go in strange directions. But when I suggest we may have drifted off the point, he exclaims: “No! It’s exactly the same thing!” Sellars is in London to stage The Gospel According to the Other Mary, his 2012 collaboration with the composer John Adams showing at English National Opera from 21 November, for the first time. The “other Mary” is a conflation of Mary of Bethany and the Magdalen (itself an idea that dates back to Gregory the Great), and the piece tells the Passion story from the point of view of the women around Jesus. Any appearance of the Gospel on stage in an aggressively secular age is rather a surp