As a Christian I feel like I need to add something to the topic in terms of the Old Testament, New Testament etc. It isn't that I think that I know better than anyone else it's that I want to share my understanding and why I follow the path of Christ.
I'm not a Bible literalist. I believe that the books of the Bible were written by people and (especially the OT) should be read as a reflection of the times. The laws in the OT books were not laws for Christians they were laws for everyone. Over the centuries there have been hundreds of recorded laws that guide civilization and more than a few of them claim that they came from God. When the authors of the OT were discussing the path to heaven they were trying to find a way to reach God and make themselves acceptable. We all know our own hearts and minds. We all have thoughts that go through our heads that aren't necessarily nice or acceptable. For some people who wanted to be worthy of God those thoughts made them feel ashamed and as a shamed, flawed human God couldn't possibly want us. They were reaching out and attempting to win eternal salvation in the only way they knew how.
I can tell that many of our members are familiar with the Bible, and have given matters of faith a great deal of thought so I'm sure it will come as no surprise to anyone when I say that the simplest proof, without a doubt that the Old Testament was not handed down from God comes from the fact that Jesus had to read the scriptures. Why would God made flesh need to read these Scriptures if they were from heaven? Many times Jesus pointed out the hypocrisy and impossibility of the OT laws and used quite a bit of sarcasm towards people who were too obsessed with them. I pointed out a bit of scripture in the other thread that I think is appropriate here too.
Galatians 5:1 It is for freedom that Christ has set us free. Stand firm, then, and do not let yourselves be burdened again by a yoke of slavery.
2Mark my words! I, Paul, tell you that if you let yourselves be circumcised, Christ will be of no value to you at all. 3Again I declare to every man who lets himself be circumcised that he is obligated to obey the whole law. 4You who are trying to be justified by law have been alienated from Christ; you have fallen away from grace. 5But by faith we eagerly await through the Spirit the righteousness for which we hope. 6For in Christ Jesus neither circumcision nor uncircumcision has any value. The only thing that counts is faith expressing itself through love.
Paul summed up everything that Jesus died to give us. We no longer have to be slaves to sin, which is what the people in the OT were. They were so legalistic that any small break in the law was considered an infraction against God. They were slaves to the heaps of laws and rules that were all but impossible for people to follow. He also gives us a very important warning in that passage.
2Mark my words! I, Paul, tell you that if you let yourselves be circumcised, Christ will be of no value to you at all. 3Again I declare to every man who lets himself be circumcised that he is obligated to obey the whole law. 4You who are trying to be justified by law have been alienated from Christ; you have fallen away from grace.
If what we want is to live according to the Old Testament laws then in our judgment we will be accountable for every one of them. We aren't saved both by Grace and by the OT, we have to pick one or he other. If we wish to live according to those old laws then we surrender the Salvation that was given to us by Christ.
In recent years Christianity has become something hideous and terrible and I'm sorry to see the damage that has been done to society in the name of christianity. I would, however, like to share a passage from the book of Revelation too. I'll just link it though, as this message is already starting to become terribly long. I hope that people who really are interested in this discussion will read it and I pray that it will be understood as I see it.
http://www.biblegateway.com/passage/?book_id=73&chapter=18&version=47