CwC asked: Dan, what stops you from obeying the Mosaic Code?
If it is Old Covenant it has been nailed to the Cross by Jesus as fulfilled and the New Covenant has continued it. The only time you would follow the Old Covenant is if it is repeated in the New Covenant. You won't find anything repeated about keeping the Sabbath in the New Covenant, for example, because Jesus is our Sabbath rest. So the 4th Old Commandment had been fulfilled.
(Hebrews 4:9-10, Matthew 11:28)
Jeremiah 31:31-34, Hebrews 8:7-8,13, Luke 22:20, 1 Corinthians 11:25, Hebrews 8:6, Hebrews 9:11-15, Hebrews 1:1-14, Romans 6:14, Romans 8:1-4, Hebrews 10:16
I can stop here and point you to Hebrews 9-10 that clearly spells it out, but I'll flesh it out further.
"He then says, See, I have come to do Your will. He takes away the first to establish the second." ~Hebrews 10:9 HCSB
I am sure you are fully aware of this, but it's worth repeating for the discussion. We need to make a distinction between the three types of laws in the Old Testament.
The first type is ceremonial. These are the laws governing the temple worship and the way we are to approach God. They have to do with the layout of the temple, the ways a person must be purified, the sacrificial system. We don’t sacrifice animals today because Jesus has come, the perfect sacrificial Lamb of God. He, in his death on the cross, fulfilled the ceremonial law. They only apply as Christ has fulfilled these.
The second type is judicial, civil law. These laws covered the specific laws for the nation of Israel. These still apply to given a proper Godly way to run a government. They are about no taxes, no police force fining it's citizens for infractions, and restitution and capital punishment, instead of prisions, as a much better way to governing it's citizens. The civil law has been fulfilled by Christ in that God’s Kingdom has been extended to all nations, transcending national identity. We are still bound by the judicial laws of Israel, as the chosen, in properly governing a society.
The third type is moral law. The Ten Commandments fall into this category. These are laws that transcend the civil and ceremonial laws. Yes, Jesus fulfilled the moral law, just as he did the other two, but we are now free to follow this Law. They are still in effect, because they are a reflection of God’s moral character, and that does not change.
On a side note, the dietary guidelines in Leviticus 11 are still "in effect" I want to believe, because it's repeated and continued in the NT. Plus, the fact that 'clean' and 'unclean' foods haven't changed. But again, you're made clean through Christ, not from anything we're doing, or ingesting. It's just good to not ingest unclean animals that were created to ingest death and the refuge of the world. God's wisdom gave us very good nutritional, and preparatory, guidelines. Following them just makes sense still. It just will not get you to heaven by doing so. These days we have more options to continue to follow the practices even. We even have beef bacon!
Galatians 3:13 "Christ hath redeemed us from the curse of the law, being made a curse for us: for it is written, Cursed is every one that hangeth on a tree:"
Jesus, at the time before the cross, was an Old Covenant prophet (Old Covenant Messianic Kingdom of David), after the cross he became the High Priest (Christ’s New Covenant Church Kingdom)
In order for there to be a change in the LAW, there had to be a change in the Priesthood. Jesus did NOT become High Priest of His New Covenant Kingdom until He was Resurrected from the dead. If Jesus, before the Cross, had given NEW Covenant Law, there would have been NO New High Priest to Mediate it. When He was alive we were still under the Old Covenant Messianic Kingdom of David.
Hebrews 7:12 "For the priesthood being changed, there is made of necessity a change also of the law."
Romans 7:5-7 "For when we were in the flesh, the motions of sins, which were by the law, did work in our members to bring forth fruit unto death. But now we are delivered from the law, that being dead wherein we were held; that we should serve in newness of spirit, and not in the oldness of the letter. 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.