I do not know what Bible you are reading, however The Bible states God has a covenant with Israel (Judah the Jews WERE apart of and shall be again in the future). The Bible deals with Israel past and future (Ezekiel 37, and the book of Daniel). In the future Kingdom of God many nations will be "God's chosen and beloved...". Quoting: anonymous 1593458
True Israel does get made to be whole, 144,000 make it to the day the 7th trump sounds and after the 2 witnesses are resurrected the unrepented Gentiles are killed and then the resurrection of Eze:37 takes place in conjunction with the last part of Eze:39 and all of Eze:47 and all of Jer:31 come to pass on that same day.
However the 'little ones' in Zec:13 are Gentiles and thir judgment comes up as they were 'created' in the first reference below, they were the ones that were taught once the 70 weeks were completed (3 1/2 years after the cross, which is the 'smote'.
against my shepherd,
and against the man that is my fellow,
saith the LORD of hosts:
smite the shepherd,
and the sheep shall be scattered:
and I will turn mine hand upon the little ones.
And it shall come to pass,
that in all the land,
saith the LORD,
two parts therein shall be cut off and die;
but the third shall be left therein.
And I will bring the third part through the fire,
and will refine them as silver is refined,
and will try them as gold is tried:
they shall call on my name,
and I will hear them:
I will say,
It is my people:
and they shall say,
The LORD is my God.
But all this was done,
that the scriptures of the prophets might be fulfilled. Then all the disciples forsook him,
A noise shall come even to the ends of the earth;
for the LORD hath a controversy with the nations,
he will plead with all flesh;
he will give them that are wicked to the sword,
saith the LORD.
Thus saith the LORD of hosts,
evil shall go forth from nation to nation,
and a great whirlwind shall be raised up from the coasts of the earth.
And the slain of the LORD shall be at that day from one end of the earth even unto the other end of the earth:
they shall not be lamented,
they shall be dung upon the ground.