But Jesus said He didn't come to abolish the Law?
My understanding is that came not to abolish it but fulfill or complete it. When that was finished, it could be legally/morally abolished ie: put away. If it was abolished without being fulfilled that would be like a breach of contract in modern terms and that would be wrong but if fully completed then abolishing or putting it away is proper.
Example:
What does it mean to fulfill prophecy? It means it's completed, done. It's not something to look forward to happening because it already happened and it's great! But, it's done and completed and removed from the list of prophecies that are still to come. Fulfilled prophecy becomes history! Fulfilled law becomes history as well. Christ replaced the old law and covenant with a new law and covenant.
A covenant is like a contract and you can't have two at the same time. One must be finished and put away before a new one can be put in place. That's what was happening at the cross regarding the old covenant and law and the new covenant and law. How Christ fulfilled and completed the first law was to live a life that never broke any of the law. Without that being accomplished we couldn't have received the new covenant and still would have been in bondage to the old.
Gal 4:21 Tell me, ye that desire to be under the law, do ye not hear the law?
Gal 4:22 For it is written, that Abraham had two sons, the one by a bondmaid, the other by a freewoman.
Gal 4:23 But
he who was of the bondwoman was born after the flesh; but he of the freewoman was by promise.
Gal 4:24
Which things are an allegory: for these are the two covenants; the one from the mount Sinai, which gendereth to bondage, which is Agar.
Gal 4:25 For this Agar is mount Sinai in Arabia, and answereth to Jerusalem which now is, and is in bondage with her children.
Gal 4:26 But Jerusalem which is above is free, which is the mother of us all.
Gal 4:27 For it is written, Rejoice, thou barren that bearest not; break forth and cry, thou that travailest not: for the desolate hath many more children than she which hath an husband.
Gal 4:28 Now we, brethren, as Isaac was, are the children of promise.
Gal 4:29 But as then he that was born after the flesh persecuted him that was born after the Spirit, even so it is now.
Gal 4:30 Nevertheless what saith the scripture?
Cast out the bondwoman and her son: for the son of the bondwoman shall not be heir with the son of the freewoman.
Gal 4:31 So then, brethren,
we are not children of the bondwoman, but of the free.