Nations existing at the time of Christ's return are judged based upon their treatment of the "brethren"(the Jews) to determine if they are allowed to enter the millennial kingdom.
The Final Judgment (subtitle from eSword)
Mat 25:31
When the Son of man shall come in his glory, and all the holy angels with him, then shall he sit upon the throne of his glory:
Mat 25:32
And before him shall be gathered all nations: and he shall separate them one from another, as a shepherd divideth his sheep from the goats:
Mat 25:33 And
he shall set the sheep on his right hand, but the goats on the left.
Mat 25:34 Then shall the King say unto them on his right hand, Come, ye blessed of my Father, inherit the kingdom prepared for you from the foundation of the world:
Mat 25:35 For I was an hungred, and ye gave me meat: I was thirsty, and ye gave me drink: I was a stranger, and ye took me in:
Mat 25:36 Naked, and ye clothed me: I was sick, and ye visited me: I was in prison, and ye came unto me.
Mat 25:37 Then shall the righteous answer him, saying, Lord, when saw we thee an hungred, and fed
thee? or thirsty, and gave
thee drink?
Mat 25:38 When saw we thee a stranger, and took
thee in? or naked, and clothed
thee?
Mat 25:39 Or when saw we thee sick, or in prison, and came unto thee?
Mat 25:40 And the King shall answer and say unto them, Verily I say unto you, Inasmuch as ye have done
it unto one of the least of these my brethren, ye have done
it unto me.
Mat 25:41 Then shall he say also unto them on the left hand, Depart from me, ye cursed, into everlasting fire, prepared for the devil and his angels:
Mat 25:42 For I was an hungred, and ye gave me no meat: I was thirsty, and ye gave me no drink:
Mat 25:43 I was a stranger, and ye took me not in: naked, and ye clothed me not: sick, and in prison, and ye visited me not.
Mat 25:44 Then shall they also answer him, saying, Lord, when saw we thee an hungred, or athirst, or a stranger, or naked, or sick, or in prison, and did not minister unto thee?
Mat 25:45 Then shall he answer them, saying, Verily I say unto you, Inasmuch as ye did
it not to one of the least of these, ye did
it not to me.
Mat 25:46 And these shall go away into everlasting punishment: but the righteous into life eternal.
There is nothing in the text above specifically about the Jews.
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