Don't you believe that Jesus fulfilled the law, every jot and tittle?
He filled it full, not destroy it.
Mat 5:17 "Do not think that I came to destroy the Law or the Prophets. I did not come to destroy but to fulfill.
and then gives examples...
Mat 5:21 "You have heard that it was said to those of old, 'YOU SHALL NOT MURDER, and whoever murders will be in danger of the judgment.'
Mat 5:22 But I say to you that whoever is angry with his brother without a cause shall be in danger of the judgment. And whoever says to his brother, 'Raca!' shall be in danger of the council. But whoever says, 'You fool!' shall be in danger of hell fire.
Mat 5:27 "You have heard that it was said to those of old, 'YOU SHALL NOT COMMIT ADULTERY.'
Mat 5:28 But I say to you that whoever looks at a woman to lust for her has already committed adultery with her in his heart.
Doesn't sound like He did away with it, He actually added to it.
1Jn 2:3 Now by this we know that we know Him, if we keep His commandments.
1Jn 2:4 He who says, "I know Him," and does not keep His commandments, is a liar, and the truth is not in him.