Sorry, you're wrong.
Deut 14:2: For thou art an holy people unto the LORD thy God, and the LORD hath chosen thee to be a peculiar people unto himself, above all the nations that are upon the earth.
But it wasn't unconditional. It was conditioned upon obedience.
1 Kings 9:6 But if ye shall at all turn from following me, ye or your children, and will not keep my commandments and my statutes which I have set before you, but go and serve other gods, and worship them: 7 Then will I cut off Israel out of the land which I have given them; and this house, which I have hallowed for my name, will I cast out of my sight; and Israel shall be a proverb and a byword among all people:
For example, at Kadesh Barnea after the multitude followed the faithless spies' negative report, God was going to disinherit them.
Num 14:11 And the LORD said unto Moses, How long will this people provoke me? and how long will it be ere they believe me, for all the signs which I have shewed among them? 12 I will smite them with the pestilence, and disinherit them, and will make of thee a greater nation and mightier than they.
You see, it was never unconditional. Plus, it was only temporary. But when Christ established his church, God's plan was fulfilled and national Judaism had fulfilled its purpose. Proof is that Jews no longer obey the law re animal sacrifices. Nor do they know the priestly line (since the genealogical records were destroyed at the destruction of Jerusalem in AD 70 by general (later to become emporer) Titus.
Paul confirms that the law of Moses is no longer valid. Rom 7:4-6: Wherefore, my brethren, ye also are become dead to the law by the body of Christ; that ye should be married to another, even to him who is raised from the dead, that we should bring forth fruit unto God. For when we were in the flesh, the motions of sins, which were by the law, did work in our members to bring forth fruit unto death. But now we are delivered from the law, that being dead wherein we were held; that we should serve in newness of spirit, and not in the oldness of the letter.
He's contrasting the old law (of Moses) with the law of Christ. We're no longer under the old law.
In fact, Paul said that it was a cumbersome at best.
Acts 15:10: Now therefore why tempt ye God, to put a yoke upon the neck of the disciples, which neither our fathers nor we were able to bear?
He's referring to the law of Moses.
Plus, Jerusalem will be vaporized along with the rest of the universe when Christ returns.
2 Peter 3:10-13: But the day of the Lord will come as a thief in the night; in the which the heavens shall pass away with a great noise, and the elements shall melt with fervent heat, the earth also and the works that are therein shall be burned up. Seeing then that all these things shall be dissolved, what manner of persons ought ye to be in all holy conversation and godliness, Looking for and hasting unto the coming of the day of God, wherein the heavens being on fire shall be dissolved, and the elements shall melt with fervent heat? Nevertheless we, according to his promise, look for new heavens and a new earth, wherein dwelleth righteousness.
Anyway, just so you know.