I've only read a few of the posts on this thread, but your post here I think brings up an important issue. Some Christians like to say that the Jews couldn't perfectly keep the law and to fail in one point was to be guilty of all. The penalty, they like to say, is death. The whole thing about the "letter" of the Law versus the "spirit" of the Law brings up something interesting also. Does any, or can any, Christian obey the commands of Jesus not to be angry and not to lust? I would really question anybody that says they can stay in the "spirit" of loving God and Jesus to the point of never breaking these commands.
So does that make Christians guilty of all? And, if they do get angry and lust once in a while, does that mean they haven't truly repented? And, to me, the big issue, does this mean that Christians can't obey the commands God gave Christians? If so, then God's rules, laws and commands are not practical and can't be followed by the letter, or by the spirit or in any way. Which makes the poor believer, that wants to do "God's" will, in a constant cycle of breaking his Laws and trying to, but unable to repent. The other problem is that it leaves some to hate, but more likely, to lust in private, and then to lie about it, and pretend they are all good with God.
But, speaking of pretending, the Jews were told by God to stone those that broke many of his commands, including breaking the Sabbath. For several centuries this was the Law, but then did God change his mind? Was that not all that important to him? Was it only a game? For all those years people got stoned to death for breaking Laws that Christians like to say are impossible to follow. God, supposedly, set up the rules. He defined enough of the laws for the people to know what they must do to the law breaker. It wasn't "traditions" added later. It was God in his rule book. And then he changes the rules? Then he abolishes the stoning? He says that the Sabbath isn't all that important anymore? Unfortunately, for me, it makes me question the whole thing. Is any of it really from God, or was it people making up rules?