http://www.jamesalison.co.uk/texts/eng11.html
I’m going to try to defend a thesis with you: that Christianity is a priestly religion which understands that it is God’s overcoming of our violence by substituting himself for the victim of our typical sacrifices that opens up our being able to enjoy the fullness of creation as if death were not. The first thing that I ought to do, therefore, is to give you a brief account of what is traditionally called the substitutionary theory of atonement; of what we are up against; of what a certain crystallization of texts has thrown up that has kept us captive; and how we are going to try and move from a two-dimensional account to a three-dimensional account and see that actually all the creative lines in that story flow in an entirely different direction.