For truly, I say to you, till heaven and earth pass away, not an iota, not a dot, will pass from the law until all is accomplished. For I tell you, unless your righteousness exceeds that of the scribes and Pharisees, you will never enter the kingdom of heaven. But I say to you that every one who looks at a woman lustfully has already committed adultery with her in his heart. And do not swear by your head, for you cannot make one hair white or black.
Anger lies at the root of murder, so to root out anger is to avoid murder absolutely.
Similar to the first point, rooting out lust would render adultery impossible. Only the husband, not the wife, could initiate the divorce for reasons as simple as spoiling a meal. With a bill from her former husband, she could marry another man. Honest people don't even need to swear. One Main Point Jesus brings God's law to perfection.