In order to understand these verses, it is necessary to understand what is meant by the "Law of Moses" and the "Law of YAHshua."
In the Hebrew language, the "Law of Moses" is called the "Torah of Moshe". (The Torah here means the Old Covenant with its statutes and judgments i.e. enactments & verdicts of the enactments that YAHWEH gave through Moses.) The Torah was usually referred to in the following ways: (A) During the infancy of the New Covenant Congregation, the Law (Torah) of Moses usually referred to the teaching of Moses found in the first five books of the Holy Scriptures. (B) Part of the time it referred to all the teaching in the Tanakh (the Old Testament). It included the teaching of Moses, the Prophets and the authors of the other books, called "The Writings," in the Holy Scriptures. (C) Some of the time the Law (Torah) of Moses referred to all the teaching of Moses, the Prophets, the Writings, and the Oral Law that was added by the Jewish people. (D) At other times, it referred to the teaching of Moses, the Prophets, the Writings, the Jewish Oral Law, and the Rabbinical interpretations of the teaching of Moses. The reason the latter three are also classified as the "Law (Torah) of Moses" is because they are supposed to be the current interpretation of the "Law (Torah) of Moses" for each current generation.
In the Hebrew language, the "Law of YAHshua Messiah" would be the "Torah of YAHshua Ha Mashiach." (The Torah here means the New Covenant as mediated by YAHshua the Mediator.) Many people do not believe that any of the "Law (Torah) of Moses" is a part of the "Law (Torah) of YAHshua Messiah." As the main example that it is, Moses certainly taught the people to keep the Ten Commandments (the centerpiece of the Old Covenant which contained many rules and regulations to enforce the keeping of them). Can anyone possibly say with a strait face that the keeping of the Ten Commandments is not part of the New Covenant teaching or doctrine that YAHshua Messiah and His Apostles taught and that YAHWEH wrote in the hearts and minds of the Believers?
Heb. 10 (16) This is the Covenant that I will make with them after those days, saith YAHWEH, I will put MY laws into their hearts, and in their minds will I write them; (17) And their sins and iniquities will I remember no more.
I John 5 (I) Whosoever believeth that YAHshua is the Messiah is born [begotten] of YAHWEH: and every one that loveth HIM that begat loveth Him also that is begotten of HIM. (2) By this we know that we love the children of YAHWEH, when we love YAHWEH, and keep HIS Commandments. (3) For this is the love of YAHWEH, that we keep HIS Commandments: and HIS Commandments are not grievous.
Rev. 22 (14) Blessed are they that do HIS Commandments, that they may have right to the Tree of Life, and may enter in through the gates into the city [New Jerusalem].
YAHshua, the very divine presence of YAHWEH manifested as a human being, said that He did not come to destroy the Torah (Old Covenant, statutes and judgments i.e. enactments & verdicts of the enactments that YAHWEH gave through Moses to teach) or (the teaching of) the Prophets, but He came to fulfil that which they taught concerning Him.
Mat. 5 (17) Think not that I am come to destroy the law [Torah of Moses], or [the teaching of] the prophets: I am not come to destroy, but to fulfill. [to fulfill that which the Torah and the Prophets taught concerning Him] (18) For verily I say unto you, *Till Heaven and earth pass, one jot or one tittle shall in no wise pass from the law [Torah, or the teaching of Torah as taught by Moses], TILL ALL BE FULFILLED.TILL ALL what BE FULFILLED? YAHshua came to fulfill that which was taught concerning Himself through the laws of sacrifices and ceremonies which were only part of the "Law (Torah)" that YAHWEH gave through Moses. He also came to fulfill those same things that were taught by the Prophets and in the Writings in the Tanakh (Old Testament). This is that which He was referring to when He spoke to His disciples on the fourth day after His death.
Luke 24 (36) And as they thus spake, YAHshua Himself stood in the midst of them, and saith unto them, Peace be unto you. (37) But they were terrified and affrighted, and supposed that they had seen a spirit. (38) And He said unto them, Why are ye troubled? And why do thoughts arise in your hearts? (39) Behold My hands and My feet, that it is I Myself: handle Me, and see; for a spirit hath not flesh and bones, as ye see Me have. (40) And when He had thus spoken, He showed them His hands and His feet. (41) And while they yet believed not for joy, and wondered, He said unto them, Have ye here any meat? (42) And they gave Him a piece of a broiled fish, and of a honeycomb. (43) And He took it, and did eat before them. (44) And He said unto them, These are the words which I spake unto you, while I was yet with you, that all things must be fulfilled, which were written in the law [Torah] of Moses, and in the prophets, and in the psalms, concerning Me. (45) Then opened He their understanding, that they might understand the scriptures, (46) And said unto them, Thus it is written, and thus it behoved Messiah to suffer, and to rise from the dead the third day:
The all things that were taught by the sacrificial and ceremonial laws administered by the Levitical Priesthood, the testimonies of the prophets and words concerning Him in the Psalms foretold of YAHshua’s death, burial, resurrection and ascension to Heaven where He now sits as our Mediator of the New Covenant. These are the things that had to be fulfilled before one jot or one tittle would pass from the law (Torah) that He came to fulfill. He did fulfill that which He came for! HALLELUYAH!
*I believe that "Heaven and earth will pass" or "till heaven and earth pass" is an Aramaic figure of speech meaning that what I am saying must come true.