For one thing Christ and the Apostles were all on the same page. Jesus declared all foods clean:
For it doesn't go into their heart but into their stomach, and then out of the body." In saying this, Jesus declared all foods clean. (Mark 7:19)
Which apparently had implications for the inclusion of the Gentiles:
And there came a voice to him, Rise, Peter; kill, and eat. But Peter said, Not so, Lord; for I have never eaten any thing that is common or unclean. And the voice spake unto him again the second time, What God hath cleansed, that call not thou common. (Acts 10:13-15)
Apparently James, not an Apostle, at the Council of Jerusalem decided a letter should be written to the Gentiles in Galatia, thus the letter to the Galatians. He wanted to include a restriction against eating things with blood in them or things strangled, it never made it in the letter. What is really most important about the New Testament teaching about the Mosaic Law is that it's an inside out way of keeping it.
But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart. And if thy right eye offend thee, pluck it out, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not that thy whole body should be cast into hell. (Matt. 5:28,29)
Compare that to Romans 7 sometime, it's going to come down to things you set your heart on, set eyes on, that determine what you put your hands on. Covetousness was the last commandment in the Old Testament but in the New Testament is the first when you think about it. Paul and Jesus were definitely on the same page, I don't see any differences there. I remember someone brought up James and Paul once talking about justification and works, it was only a problem till you started looking at the context and compared apple to apples.
I'm sure I don't follow, but Jesus and Paul both kept the Mosaic Law. Paul drew the line at compelling Gentiles to submit to the Law, but he always did keep it, because he was a Jew. I've always wondered if he ever indulged himself in an occasional pork chop but I seriously doubt it.
I saw a billboard I thought was funny, it read, 'What part of thou shalt not did you not understand?'. The purpose of the law was not to produce righteousness by obeying the Law, the Law was intended to bring sin out.
What shall we say then? Is the law sin? God forbid. Nay, I had not known sin, but by the law: for I had not known lust, except the law had said, Thou shalt not covet. But sin, taking occasion by the commandment, wrought in me all manner of concupiscence. For without the law sin was dead. (Rom. 7:7,8)
The Law is kind of upside down, It starts off with love God with all your heart, mind, soul and strength. It's generally understood that love your neighbor as yourself is also a key foundation. Then it has two laws prohibiting idolatry and ends with thou shalt not covet. The New Testament starts with you being a sinner, then you hear the gospel, believe and receive the new nature. Fulfilling the Law actually starts with a change of heart and then ultimately the fulfillment of New Testament promise is the fruit of the Spirit:
That Christ may dwell in your hearts by faith; that ye, being rooted and grounded in love,May be able to comprehend with all saints what is the breadth, and length, and depth, and height; And to know the love of Christ, which passeth knowledge, that ye might be filled with all the fulness of God. (Eph. 3:17-19)
Paul's letters invariably start with doctrine then practical application. Ephesians is divided exactly in the middle and the doctrinal portion is the first three chapters. The love of God is in the closing lines, that's perfectly consistent with the Apostolic and New Testament witness. The fruit of the Spirit is the end product, not the foundation. The Mosaic Law was the opposite, the love of God was the foundation of the covenant, often compared to a marriage covenant. The content is the same, the approach of the New Testament is upside down compared to the Law of Moses.
Mortify therefore your members which are upon the earth; fornication, uncleanness, inordinate affection, evil concupiscence, and covetousness, which is idolatry. (Col. 3:5)
Ok, I'm to mortify desires here, deeds like worshiping idols comes later. See how that works? Jesus said wash the inside of the cup first and his worst condemnation was calling hypocrites white washed tombs. It's from the insider out, all the clean linen and kosher food in the world won't change a covetous, lust filled heart. Only God can do that.
Grace and peace,
Mark