It is fantastic when a Christian politician with orthodox views on human sexuality runs for leadership of a political party as it means that the media start to get very interested in the concept of sin. Reporters positively fall over themselves to ask the latest candidate whether they think gay sex is a sin. Tim Farron got this treatment a few years ago, after becoming leader of the Liberal Democrats. Today it is the turn of Kate Forbes of the Scottish Nationalist Party. She has recently returned from maternity leave to run for leader and is now getting, what I call, The Treatment.