Judgment Day

 Theme Text'‘When thy judgments are in the earth, the inhabitants of the world will learn righteousness." (Isaiah 26:9)

1) What is Judgment Day?
Paul says, ‘Christ Jesus will judge the living and the dead when he comes to set up his Kingdom.’ 2Tim4:1 NLT. So judgment is to begin when Jesus returns and sets up his Kingdom. ‘For God has set a Day when he will judge the inhabited world, and do it justly, by means of a man [Jesus] whom he has designated.’ Acts 17:31 CJB.
So what happens when the inhabited world is judged?
     When thy judgments are in the earth, the inhabitants of the world will learn righteousness. Isaiah 26:9.

So the Thousand-year Reign where the resurrected mankind learns righteousness is the Judgment Day.

2) Who will teach them righteousness?
You have made them [the elect] to be a kingdom and priests to serve our God, and they will reign on the earth. Rev 5:10. Yes, the elect as joint heirs will rule with Christ and teach the resurrected mankind.
The saints will judge the world (1Cor 6:2), offering life to the repentant (Rev 22:17).
The Elect will even judge the angels who had sinned during Noah’s times (1Cor 6:3, 2Pet 2:4).

3) Mankind always has had difficulty in learning righteousness. What would be different then?

There will be a Highway of holiness on earth (Isa. 35:8), whereas today only a Narrow Way exists (Matt 7:14), with Satan roaming as a lion on the Highway looking for people to deceive (1Pet 5:8).
Mankind will learn righteousness and be judged by their response to Christ, subsequent progress and behavior (Matt 16:27, 25:31-46, Luke 12:48, Micah 4:1-3).

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