It's the same thing. We have a completed Scripture. There are no more prophets and haven't been since John the Baptist. God has revealed all He intended to reveal for the Church Age until the Second Coming of Christ.
You can disagree with that but it contradicts your saying that the Law is fulfilled and it contradicts the Bible.
Well I think it needs to be understood what the "fulfilling the Law" means
17 ¶Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil.
I think we all agree that by fulfilling the Law of Moses he meant his sacrifice would be the last great sacrifice and no more would be needed.
But what did he mean by fulfil the prophets?
John 1:45
45 Philip findeth Nathanael, and saith unto him, We have found him, of whom Moses in the law, and the prophets, did write, Jesus of Nazareth, the son of Joseph.
Philip and the other apostles understood that the Messiah would come and they understood Moses' laws of sacrifices were pointing to that coming. Now why isn't the Old Testament clear on that point? Oh there are a few passages like Isa 53 but as the Book of Mormon says
"...for behold, they have taken away from the gospel of the Lamb many parts which are plain and most precious; and also many covenants of the Lord have they taken away." 1 Nephi 13
Why don't we have anything dating back beyond about 150bc?
Among the Dead Sea Scrolls there is one called
4Q246 The Son of God Scroll
"[X] shall be great upon the earth. [O King all (people) shall] make [peace], and all shall serve [Him. He shall be called the Son of] the [G]reat [God], and by His Name shall He be hailed (as) the Son of God, and they shall call Him Son of the Most High like a shooting star....Their kingdom will be an eternal kingdom, and their paths will be righteous. They will judge"
The Angel Gabriel who appeared to Mary paraphrased that passage.
Luke 1
32 He shall be great, and shall be called the Son of the Highest: and the Lord God shall give unto him the throne of his father David:
33 And he shall reign over the house of Jacob for ever; and of his kingdom there shall be no end.
Jesus said; Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me.
Jesus said to the Jews; "Your father Abraham rejoiced to see my day: and he saw it, and was glad"
On the road to Emmaus Jesus opens the scriptures to the disciples;
"And beginning at Moses and all the prophets, he expounded unto them in all the scriptures the things concerning himself"
and later he says;
"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 of Moses, and in the prophets, and in the psalms, concerning me"
Where are all of these prophecies? Where is the prophecy concerning
Well there are a number of lost scriptures "...sayings of the seers.."
2 Chr. 33:19, acts of Abijah … in the story of the prophet Iddo:
2 Chr. 13:22 and many others.
Mathew quoted another "23 And he came and dwelt in a city called Nazareth: that it might be fulfilled which was spoken by the prophets, He shall be called a Nazarene." Where did that come from?
And the Wise Men who came looking for the baby " for we have seen his star in the east, and are come to worship him...
When they had heard the king, they departed; and, lo, the star, which they saw in the east, went before them, till it came and stood over where the young child was. When they saw the star, they rejoiced with exceeding great joy."
There is no scripture in the Old Testament that speaks of a new star to be seen over the place where the Baby Jesus could be found, a Star out of Jacob yes but nothing about a New Star over the baby. Why did they follow that star?
(There is in the Book of Mormon, Hel 14.)
The theory is that between the death of Jesus and the point of when the Bible was put together the Jews removed everything they could which prophesied of the coming of the Messiah, his death and resurrection.
But the Book of Mormon mentions some prophecies which they brought with them;
9 And the world, because of their iniquity, shall judge him to be a thing of naught; wherefore they scourge him, and he suffereth it; and they smite him, and he suffereth it. Yea, they spit upon him, and he suffereth it, because of his loving kindness and his long-suffering towards the children of men..... yieldeth himself, according to the words of the angel, as a man, into the hands of wicked men, to be lifted up, according to the words of Zenock, and to be crucified, according to the words of Neum, and to be buried in a sepulchre, according to the words of Zenos, which he spake concerning the three days of darkness, which should be a sign given of his death..." 1Nephi 19:29
But the point is Jesus wasn't saying he was the end of prophecy but that the prophecies which had been made concerning him had come to pass.