You still don't get it.
According to Calvinistic theory Unconditional Election is a Bible principle. Therefore every person within THE ELECT NATION OF ISRAEL should have been saved by IRRESISTIBLE GRACE having received the GIFT OF FAITH.
Yet Calvinists cannot tell us why every Jew did not receive that so-called gift of faith, when that nation was already elected by God?
Do you know that God specifically elected Israel? Well here is the proof.
And ye shall be unto me a kingdom of priests, and an holy nation. These are the words which thou shalt speak unto the children of Israel. (Exod 19:6)
For thou art an holy people unto the LORD thy God: the LORD thy God hath chosen thee to be a special people unto himself, above all people that are upon the face of the earth. The LORD did not set his love upon you, nor choose you, because ye were more in number than any people; for ye were the fewest of all people (Deut 7:6,7)
For the LORD hath chosen Jacob unto himself, and Israel for his peculiar treasure. (Ps 135:4)
We could add many more Scriptures. But in view of these Scriptures, the Calvinist must explain to Israel and the Church why God did not unconditionally elect every Jew for salvation.
And because Unconditional Election is A BOGUS DOCTRINE you will never be able to explain why the majority of Jews remained unsaved.