The parameters that you're claiming Jesus was restricted to are man-made parameters.
Jesus wasn't restricted to any "ministration of death."
He taught what He pleased and it pleased Him to live out the 10 Commandments for all to see.
On the contrary, God tells us in Deuteronomy that the 10 Commandments are the path to life when Moses declared to Israel that when you "do them, ... ye may live...".
Deuteronomy 4:1
2 Corinthians 3:7 the glory fading from Moses' face depicted how the OT law was going to be "
done away" and be "done away" in Christ (2 Corinthians 3:13-14 cf Ephesians 2:15) for Christ took it
all out of the way when He died on the cross....the OT law was "
abolished".
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The OT law could not justify the Jew like the NT law can justify both Jew and Gentile. Romans 8:3 "
For what the law could not do, in that it was weak through the flesh....". The OT law could not justify, it could not make people perfect before God for those animal sacrifices could not take away sin (Hebrews 10:4). The OT law required perfect flawless obedience to it to justify a person and the Jews could not keep it perfectly for they were "
weak through the flesh". Therefore Jesus did not come to earth to extend the OT law perpetually which
cannot justify, but instead abolished it and replaced it with His NT law that can and
does justify.
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Romans 3:1-2 the OT law, the "oracles of God" was
committed to the Jew, no one else. Though it provided advantages to the Jew over the Gentile that OT law could NOT justify the Jew leaving the Jew a sinner as the Gentile (Romans 3:9).
Paul shows from Rom 1 the Gentile has sinned, Rom 2 the Jew has sinned, hence both are under sin. All those under sin are in need of justification and in the first part of Rom 3 Paul tells us what
CANNOT justify (the OT law) and the last part of Rom 3 Paul tells us what
DOES justify that being faith.
So why would one want to go back to the OT law when it CANNOT justify a person??? Paul condemned those Christians in Galatia for allowing false Judiazing teachers lead them away from the NT gospel that
does justify back to the OT law that does
not justify. Paul clearly tells those Galatians "
But that no man is justified by the law in the sight of God..." Galatians 3:11 for again, to be justified by that OT law required one to keep ALL of it perfectly which they could not do. Just ONE sin would bring the curse of the law upon one..... "
Cursed is every one that continueth not in all things which are written in the book of the law to do them." (Galatians 3:10).
Nor could they pick out some things from the OT law they liked and keep just those things and ignore the rest, for again, the law requires one keep
ALL THINGS perfectly to be justified by it. Paul said those Galatians, by going back to the OT law, indebted themselves to keeping the "
whole law" (Galatians 5:3).
Furthermore, Paul condemned those Galatians in going back to the OT law for in doing so they left the NT gospel to follow a false gospel (Galatians 1:6-9). By leaving the NT and going back to the OT they had "
fallen from grace" (Galatians 5:4)....they had left the NT that teaches a system of justification by grace and went back to the OT law that required perfect, flawless law keeping to be justified which Paul knew they could not keep it perfectly therefore it could not justify them. So again,
why would one want to go back to the OT law when it CANNOT justify a person???
Lastly, Galatians 3:12 "
And the law is not of faith: but, The man that doeth them shall live in them." When it came to justification by the OT law, FAITH DID NOT MATTER. What did matter was keeping
all the law perfectly, doing the law is all that mattered. "
The Law did not even require faith, as seen in the quotation Paul gave here from Leviticus 18:5, the meaning of which may be paraphrased, "No matter about faith; do the Law and live." This was the essence of Judaism." (Coffman Comm).
The OT law was not of faith, hence "
faith only" could
not justify under the OT law for justification under that law required
DOING it, WORKING TO OBEY ALL OF IT. The NT requires a faithful obedience, not a perfect obedience but faithful obedience to be justified by it, not faith only.
"
It (OT law) is not a system of faith, but proclaims life by doing the Law, rather than by faith. But since none can keep it perfectly, all are under the curse (Galatians 3:10)." (Johnson Notes).
The OT law could not give life for it required keeping
ALL of it perfectly, hence it is a law of death whereas the NT gospel does give life....the NT gospel has freed us from the law of death (Romans 8:2), set us free from the curse of the law
so why do people want to go back to a law of death and be under that curse (Galatians 3:10)
?????
So again, why would one today want to go back and keep that OT law when;
1) it cannot justify them
2) they cannot keep the "whole law" perfectly
3) Paul said
NO MAN is justified by the law in God's sight
4) why go back to the OT law and be
entangled again with that 'yoke of bondage'?
5) they are not even attempting to keep
all of it but instead are just cherry picking out parts of the OT law they like and avoiding the rest which those who actually lived under the OT
could not do yet still be justified anyway.