Then you should be able to see that Jesus fulfilled all of the OT.
That is a big assertion not backed up by the facts.
Of the increase of his government and peace there shall be no end, upon the throne of David, and upon his kingdom, to order it, and to establish it with judgment and with justice from henceforth even for ever.
Did Jesus do this? NO!
But with righteousness shall he judge the poor, and reprove with equity for the meek of the earth: and he shall smite the earth: with the rod of his mouth, and with the breath of his lips shall he slay the wicked.
Did Jesus do this? NO!
They shall not hurt nor destroy in all my holy mountain: for the earth shall be full of the knowledge of the LORD, as the waters cover the sea.
Has Jesus made this happen? NO!
And he shall set up an ensign for the nations, and shall assemble the outcasts of Israel, and gather together the dispersed of Judah from the four corners of the earth.
Has Jesus gathered the Twelve tribes of Israel? NO!
And in mercy shall the throne be established: and he shall sit upon it in truth in the tabernacle of David, judging, and seeking judgment, and hasting righteousness.
Is Jesus sitting on the throne in the tabernacle of David? NO!
Behold, the days come, saith the LORD, that I will raise unto David a righteous Branch, and a King shall reign and prosper, and shall execute judgment and justice in the earth.
In his days Judah shall be saved, and Israel shall dwell safely:
Is Jesus a King executing justice in the earth? Are Judah and Israel dwelling in safety? NO!
I will remove the iniquity of that land in one day. In that day, saith the LORD of hosts, shall ye call every man his neighbour.
Has iniquity been removed? Is every man a neighbor? NO!
Even he shall build the temple of the LORD; and he shall bear the glory, and shall sit and rule upon his throne; and he shall be a priest upon his throne: and the counsel of peace shall be between them both.
Did Jesus build the Temple and sit upon his throne? NO!
But the humble will inherit the land
And will delight themselves in abundant prosperity.
For the arms of the wicked will be broken,
But the Lord sustains the righteous.
The Lord knows the days of the blameless,
And their inheritance will be forever.
They will not be ashamed in the time of evil,
And in the days of famine they will have abundance.
But the wicked will perish;
And the enemies of the Lord will be like the glory of the pastures,
They vanish—like smoke they vanish away.
Has this happened? NO!
“Behold, I will open your graves and cause you to come up out of your graves, My people; and I will bring you into the land of Israel. Then you will know that I am the Lord, when I have opened your graves and caused you to come up out of your graves, My people. I will put My Spirit within you and you will come to life, and I will place you on your own land. Then you will know that I, the Lord, have spoken and done it,” declares the Lord.’”
Has this happened? NO!
And many peoples will come and say,
“Come, let us go up to the mountain of the Lord,
To the house of the God of Jacob;
That He may teach us concerning His ways
And that we may walk in His paths.”
For the law will go forth from Zion
And the word of the Lord from Jerusalem.
Has this happened? NO!
They will not teach again, each man his neighbor and each man his brother, saying, ‘Know the Lord,’ for they will all know Me, from the least of them to the greatest of them,” declares the Lord, “for I will forgive their iniquity, and their sin I will remember no more.”
Has this happened? NO!