Your comparison to eating grain on Sabbath, as all things Jesus 'contradicted' the Law was always explained as a true interpretation of the Law, not its violation. The Lord never advocated changing the Law, dropping the Law, etc. Circumcision is equivalent to Christian baptism. The Lord never advocated baptism be substituted for circumcision.
The Lord came to fulfill the Law, not to break it. And He said that nothing will ever be taken away from it until the end of times.
for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him.
That's right Blogger. And where is the untampered rule book on that?
Who is trying to censor who?
BEHOLD THE LAW IN ITS PERSPECTIVE:
John 1:17
For the law was given by Moses, but grace and truth came by Jesus Christ.
Galatians 3:10
For as many as are of the works of the law are under the curse: for it is written, Cursed is every one that continueth not in all things which are written in the book of the law to do them.
Galatians 3:23-25
23But before faith came, we were kept under the law, shut up unto the faith which should afterwards be revealed.
24Wherefore the law was our schoolmaster to bring us unto Christ, that we might be justified by faith.
25But after that faith is come, we are no longer under a schoolmaster.
James 2
8If ye fulfil the royal law according to the scripture, Thou shalt love thy neighbour as thyself, ye do well:
9But if ye have respect to persons, ye commit sin, and are convinced of the law as transgressors.
10For whosoever shall keep the whole law, and yet offend in one point, he is guilty of all.
11For he that said, Do not commit adultery, said also, Do not kill. Now if thou commit no adultery, yet if thou kill, thou art become a transgressor of the law.
12So speak ye, and so do, as they that shall be judged by the law of liberty.
1 John 3
4Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law.
5And ye know that he was manifested to take away our sins; and in him is no sin.
Hebrews 7:19
For the law made nothing perfect, but the bringing in of a better hope did; by the which we draw nigh unto God.
Galatians 2:21
I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain.