Do you understand the example of good, better best? Yes a commandment is there to be obeyed eternally. But there are good better and best ways of obeying it. Very simple really. The Mosaic law is good, what most Christians do is better, and only the saints do it best. Simple. Like Jesus said- one should not kill. But then he improves on that commandment by telling us not to grow angry with our brother, then he perfects the commandment by stating we should love our enemy, then he fulfills the commandment by dying without resistance and offering his forgiveness of those who killed him. Do you see? good, better, perfect, fulfillment of holiness. Very simple. What you have is good. What we have is better. Your view of the commandment do not kill is limited to only the good. The war with Lebanon recently shows the view Jews have of enemies. Hardly Christlike, now is it?
As far as this poor rabbi goes, your religion, your Torahs, your interpretations of what God really wants of us, allowed him somehow to reach his conclusion. Yes, he was arrested, but nevertheless, it is a flaw in Judaic theology of God that allowed him to reason such a thing from the Torah in the first place. Understand with Catholic theology being the way it is, he would never have been able to reach the conclusion at all for he would not even have had a starting point. But there are holes in Jewish theology that allow for what he did.
Good, better, best and the complete perfection. We start as good, we work for better, we reach the best and pray for complete perfection. Which is why one of our greatest saints of theology has as the title of her book- The Way of Perfection. For Jews, the laws as interpreted at the time of Moses were the be all and the end all. For Christians, we realized a better understanding of how God wanted his laws observed. Simple really. So simple.
but do not forget that Pharisee used to teach that hating the other is permissible provided you donāt kill him.