You fail to understand that it is the NATION Israel that will finally enter into the wedding supper/millennial reign via the New Covenant.
How? National corporate repentance. Thats how.
And then of course, the
believing REMNANT of nation Israel will be RECOMISSIONED to undertake the task they formerly abandoned:
To SERVE God as priests to the gentile world. The gentile remnant who survive thru the tribulation.
Hos 5:14
For I
will be unto Ephraim as a lion, and as a young lion to the house of Judah: I,
even I, will tear and go away; I will take away, and none shall rescue
him.
Hos 5:15
I will go
and return to my place,
till they acknowledge their offence, and seek my face: in their affliction they will seek me early.
Hos 6:1
Come, and let us return unto the LORD: for he hath torn, and he will heal us; he hath smitten, and he will bind us up.
Hos 6:2
After two days will he revive us:
in the third day he will raise us up, and we shall live in his sight.
https://www.blueletterbible.org/kjv/zec/12/10/s_923010
Zec 12:9
And it shall come to pass in that day,
that I will seek to destroy all the nations that come against Jerusalem.
Zec 12:10
And I will pour upon the
house of David, and upon the
inhabitants of Jerusalem, the spirit of grace and of supplications: and they shall look upon me whom they have pierced, and they shall mourn for him, as one mourneth for
his only
son, and shall be in bitterness for him, as one that is in bitterness for
his firstborn.
Zec 12:11
In that day shall there be a great mourning in Jerusalem, as the mourning of Hadadrimmon in the valley of Megiddon.
Zec 12:12
And the land shall mourn, every family apart; the family of the house of David apart, and their wives apart; the family of the house of Nathan apart, and their wives apart;
Zec 12:13
The family of the house of Levi apart, and their wives apart; the family of Shimei apart, and their wives apart;
Zec 12:14
All the families that remain, every family apart, and their wives apart.