For the law of the Spirit of life in Christ Jesus has set you free from the law of sin and of death. (Rom 8:2, NASB)
The Law of Moses has been abolished and believers are now under a new law. This new law is called the law of Christ in Galatians 6:2 and the law of the Spirit of life in Romans 8:2. The Law of the Messiah contains all the commandments applicable to a New Testament believer. The reason there is so much confusion over the relationship of the Law of Moses and the Law of the Messiah is that there a many overlapping commandments, and many believers have concluded that certain sections of the Mosaic Law have therefore been retained. But it has already been shown that this cannot be the case, and the explanation for the sameness of the commandments is to be found elsewhere.
This explanation can best be understood if it is realized that there are a number of codes in the Bible (e.g. the Edenic, Adamic, Noahic, Mosaic, and Christian). A new code will always contain some of the same commandments of the previous code, but this does not mean that the previous code is still in effect. While certain commandments of the Adamic Code were also found in the Edenic Code, this did not mean that it was still partially in force. The Edenic Code ceased to function with the fall of man. The same is true when we compare the Law of the Messiah with the Law of Moses. There are many similar commandments. For example, nine of the Ten Commandments are to be found in the Law of the Messiah, but this does not mean that the Law of Moses is still in force.
The Law of Moses has been nullified and believers are now under the Law of the Messiah. There are many different commandments. Under the Law of Moses, one would not be permitted to eat pork, but under the Law of the Messiah, he may. There are many similar commandments, but they are nonetheless in two separate systems. Therefore, if one does not kill or steal, this is not because of the Law of Moses but because of the Law of the Messiah. On the other hand, if one does steal, he is not guilty of breaking the Law of Moses but of breaking the Law of the Messiah.
The biblical basis for this freedom to keep the Law can be seen in the actions of Paul, the greatest exponent of freedom from the Law. His vow in Acts 18:18 is based on Numbers 6:2, 5, 9, and 18. His desire to be in Jerusalem for Pentecost in Acts 20:16 is based on Deuteronomy 16:16. The strongest passage is Acts 21:17‑26, where Paul, the apostle of freedom from the Law, is seen keeping the Law himself.
The believer is free from the Law of Moses, but he is also free to keep parts of it. Thus, if a Jewish believer feels the need to refrain from eating pork, he is free to do so. The same is true for all the other commandments. However, there are two dangers that must be avoided by the messianic believer who volunteers to keep the commandments of the Law of Moses. One danger is the idea that by doing so he is contributing to his own justification and sanctification. This is false and should be avoided. The second danger is in expecting others to keep the same commandments that he had decided to keep. This is equally wrong and borders on legalism. The one who exercises his freedom to keep the Law must recognize and respect another’s freedom not to keep it.
 This post is a modified version of Dr. Arnold Fruchtenbaum’s original Messianic Bible Study. The full version may be obtained here.