Christ continues to instruct the disciples on the mountain regarding life in this kingdom. His presentation now is that the law of God has more meaning than just a few external commands that are easy to follow. Christ goes through the command to murder which we might think is pretty easy to obey. I mean there are a lot of people who have gone through this life without taking another human life. Our temptation might be to skip over this command and to move onto a commandment that is probably a little more challenging. So, what is the real challenge for us not to murder someone?