As in earlier days, when it was possible for devout Christians to imagine that a bloodthirsty ‘crusade’ might be God’s will, so today many are simply, and sometimes dangerously, confused. Some opt for an escapist piety in the present and a distant ‘heaven’ in the future, leaving the present world untouched lest they get embroiled in its messy ways. Others enlist clergy to bless their bombs and their bullets. How did we get here, and how do we get back on track?