And Christ fulfils the law and the prophets because He said so. Christ concealed in the OT; revealed in the NT. Works for me.
"Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil." -- Matthew 5:17
Good! Then we agree that God will fulfill his promise here in Amos 9 ...
"And I will bring again the captivity of my people of Israel, and they shall build the waste cities, and inhabit them; and they shall plant vineyards, and drink the wine thereof; they shall also make gardens, and eat the fruit of them. 15And I will plant them upon their land, and they shall no more be pulled up out of their land which I have given them, saith the LORD thy God."
... because it certainly wasn't fulfilled in 70 AD, was it???