“No one starts a war, Jesus says, without first calculating the chances of winning. Otherwise, they may get drawn into open-ended, unending conflict, with no clear way out, sending life chasing after death as though they hate the lives of their own children, and that is no way, says Jesus, to start a war. Sometimes it is better to hate your own strength than to use it. Better to sit down and work out the price of peace than to wage such a costly war. Do you know what you are getting yourselves into?”