The 6th Commandment is very clear: "You shall not murder." (Exodus 20.13). It should not read 'Thou shalt not kill' (see left).
In Matthew 5.21-25 Jesus teaches how He interprets this commandment. It's very revealing, somewhat troubling (to our self righteousness) and extremely challenging.
After all, He is the "fulfiller" of the OT Law.
Therefore, what He says is final.
If you have ever wondered why our righteousness should surpass that of the Pharisees - then you need to listen to this message.
The sermon below is a discussion of Jesus' teaching of "You shall not murder."