Which part of the law didn't Jesus fulfill in His life or, specifically, when He went to the cross?
If Christ did not fulfill all the law, then you are under a curse. "For as many as are of the works of the law are under the curse; for it is written, 'Cursed is everyone who does not continue in all things which are written in the book of the law, to do them.'" (Gal. 3:10).
"Stand fast therefore in the liberty by which Christ has made us free, and do not be entangled again with a yoke of bondage. Indeed I, Paul, say to you that if you become circumcised, Christ will profit you nothing. And I testify again to every man who becomes circumcised that he is a debtor to keep the whole law. You have become estranged from Christ, you who attempt to be justified by law; you have fallen from grace." (Gal. 5:1-4)
"Circumcision", in this passge, is Paul reference to the bondage of the ceremonial system of the old covenant. He could have just as easily said "passover keeping" or "Leviticus 23 keeping" or "keeping kosher". If you willing place yourself under these things, there is no hope for you since you nullify Christ's work on your behalf. You deny that He came to set us free from the demands of the law, esp. the ceremonial law. He is our fulfillment. Either it is a complete fulfillment, or you are still in your sins.
Is no where in the Law, it is only in Rabbinical Judaism.
b'shem Y'shua