Law of Moses
There are differing views about the applicability of the old and new covenant among Christian denominations. Christianity teaches that this new covenant is the instrument through which God offers mercy to mankind with Jesus Christ as the only mediator and savior.
The Law of Moses is the law delivered from God through Moses to the Israelites. The old covenant which is the law of Moses is now obsolete and was fading away. The gospel of Christ is now the new covenant and will continue to exist up to the time of the end.
Acts 13:39 And by him all that believe are justified from all things, from which ye could not be justified by the law of Moses.
Heb 8:13 In that he saith, A new covenant, he hath made the first old. Now that which decayeth and groweth old is ready to vanish away.
There was a changed of priesthood from Moses to Jesus Christ.
Heb 7:12 For the priesthood being changed, there is made of necessity a change also of the law.
Heb 7:24 But this man, because he continueth ever, hath an unchangeable priesthood.
And devotees who are still believing that the law of works can make them perfect are missing the very important law which is the law of faith under Jesus dispensation.
Rom 3:27 Where is boasting then? It is excluded. By what law? of works? No; but by the law of faith.
This man kept all the commandments of Moses but it made him not perfect. He lacks one requirement to become perfect and that is following Jesus Christ. As a follower it means, doing everything that Jesus tells us to do.
Mt 19:16 And behold, one came and said to him, Good Master, what good thing shall I do that I may have eternal life?
Mt 19:17 And he said to him, Why callest thou me good? there is none good but one, that is, God: but if thou wilt enter into life, keep the commandments.
Mt 19:18 He saith to him, Which? Jesus said, Thou shalt do no murder, Thou shalt not commit adultery, Thou shalt not steal, Thou shalt not bear false witness,
Mt 19:19 Honor thy father and thy mother: and, Thou shalt love thy neighbor as thyself.
Mt 19:20 The young man saith to him, All these things have I kept from my youth: what lack I yet?
Mt 19:21 Jesus said to him, If thou wilt be perfect, go and sell what thou hast, and give to the poor, and thou shalt have treasure in heaven: and come and follow me.
The covenant made by God to His people can not be changed or altered. His commandments, laws, statutes and judgments with Israel is in effect to them who lived in that particular season but as Christians we are bounded by the new law which is the gospel of Christ.
Rom 11:29 For the gifts and the calling of God are irrevocable.
As Jesus Christ said, circumcised or not, it has nothing to do with our salvation. Well, circumcision are for Israel and uncircumcision are for the Gentiles.
1 Cor 7:19 Circumcision is nothing, and uncircumcision is nothing, but the keeping of the commandments of God.
Heb 9:9 which is a symbol of the present age, where gifts and sacrifices are offered that are incapable, concerning the conscience, of making the worshipper perfect;
Heb 9:10 being only (with meats and drinks and various washings) fleshly ordinances, imposed until a time of reformation.
Gal 5:6 For in Jesus Christ neither circumcision availeth any thing, nor uncircumcision; but faith which worketh by love.
The time of reformation is now as we can not be made perfect by the law of Moses even though we kept all these laws from our youth.