Deut 29:29
A judgement is to make an authoritative decision of separation by an opinion (Greek: aisthesis, akarino, gnome, dikaioma,  dike, krima). A righteous judgement  (Greek: krisis, dikaiokrisia) is an authoritative decision by God to separate the just, from the unjust. All judgment is committed to the Son, or the Word of God (John 5:22). Because the Word of God has long ago been manifested to destroy the works of the enemy from the foundation of the world (1 John 3:8) and never changes (Heb 13:8), judgment has already been set in motion. The old testament is the new testament concealed, The new testament is the old testament revealed.

An unchanging law of light that was hidden to most, before the Word was made flesh, was concealed by an enemy, chosen by those who desired to listen to him;
“But if our gospel be hid, it is hid to them that are lost: In whom the god of this world hath blinded the minds of them which believe not, lest the light of the glorious gospel of Christ, who is the image of God, should shine unto them. For we preach not ourselves, but Christ Jesus the Lord; and ourselves your servants for Jesus’ sake. For God, who commanded the light to shine out of darkness, hath shined in our hearts, to give the light of the knowledge of the glory of God in the face of Jesus Christ.” 2 Corinthians 4:3-6

Though God is no respector of persons, there are many who are called, few chosen (sent) and faithful (Matt 22:14, Rev 17:14), stepping into predestiny by choice;  “For whom he did foreknow, he also did predestinate to be conformed to the image of his Son, that he might be the firstborn among many brethren. Moreover whom he did predestinate, them he also called: and whom he called, them he also justified..” Romans 8:29,30

Those who have judged God faithful, and abide in the vine, or live ‘above the law’ in faith, are purged (or pruned) to make more fruit, with a residency prepared for them in the house of God (John 15:1-5). There are three wills of God for us; acceptable, good and perfect or: thirty, sixty and a hundredfold. After the former and latter rain, when the fruit is ripe, the Lord will come for His harvest;
“Be patient therefore, brethren, unto the coming of the Lord. Behold, the husbandman waits for the precious fruit of the earth, and hath long patience for it, until he receive the early and latter rain.” James 5:7

In the bible there is a gathering together in three parts of the harvest of souls. In the old testament, which was a shadow of things to come (Col 2:17),  there were three parts of the harvest:

The firstfruits; (Ex 23:16,17) The priest would cut the first ripened wheat with a sickle, consecrate himself (Ex 29:30) & bring it to the holy temple [see also Ex 13:2], which would bless the rest of the harvest. The main harvest; Most of the wheat would be gathered for the people. (Lev 19:9)
The gleaning; The corners of the field, the remnant, would be for the poor and the widows. (Lev 19:10)  All males, 20 and up, were required to go to three of the feasts (Passover, Pentecost, Feast of tabernacles) at the sound of the trumpet (Ex 23:17, Num 10:4)  In the new testament, The first fruits of the church is harvested out the field (the world) to the temple in heaven before the tribulation {which some call ‘rapture’ from Jerome’s Latin translation; repere}:
“But every man in his own order: Christ the firstfruits; afterward they that are Christ’s at his coming.” 1 Corinthians 15:23
“For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first: Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord.” 1 Thessalonians 4:16,17

The main harvest; In the middle of the ‘tribulation’ period an angel thrust in his sickle to reap (Rev 14:15)
  “And another angel came out of the temple, crying with a loud voice to him that sat on the cloud, Thrust in thy sickle, and reap: for the time is come for thee to reap; for the harvest of the earth is ripe.” Revelation 14:15

The gleaning; and the second coming, after heaven says ‘Come out of her my people’ (Rev 18:4) for all who are sealed unto the day of redemption (Eph 4:30);
  “And another angel came out of the temple which is in heaven, he also having a sharp sickle. And another angel came out from the altar, which had power over fire; and cried with a loud cry to him that had the sharp sickle, saying, Thrust in thy sharp sickle, and gather the clusters of the vine of the earth; for her grapes are fully ripe.” Revelation 14:17,18
  “Having made known unto us the mystery of his will, according to his good pleasure which he hath purposed in himself: That in the dispensation of the fulness of times he might gather together in one all things in Christ, both which are in heaven, and which are on earth; even in him” Ephesians 1:9,10
  “So shall it be at the end of the world: the angels shall come forth, and sever the wicked from among the just” Mattew 13:49

In the old testament times, there were three harvests that the feasts were centered around.
The barley harvest, which was winnowed with a big fork, tossed in the air, with the chaff easily taken separated by the wind.

The wheat harvest, which was harder to take away the wheat from the chaff. This was usually done with a ‘tribulon’ (Latin) or a hard board with glass and/or metal, sometimes pulled by animals.

The grape harvest, where the flesh of the grapes were crushed, to be harvested.

In the new testament, Jesus made a distinction between servants and friends (Luke 17:7, John 8:35, 15:14,15). Generally, the gospels were written for the unsaved, the epistles for the saved, and the book of Revelation for servants (Rev 1:1). As we’ve seen in the parables of talents and virgins, some foolish and lazy servants received judgement to a prison of outerdarkness;
“For the time is come that judgment must begin at the house of God: and if it first begin at us, what shall the end be of them that obey not the gospel of God?” 1 Peter 4:17

We’ve also seen another servant cast into prison until  he paid his debt for the wages of sinfulness
“And his fellowservant fell down at his feet, and besought him, saying, Have patience with me, and I will pay thee all. And he would not: but went and cast him into prison, till he should pay the debt.” Matthew 18:29,30

Some covenant servants will delay their entrance into the promised land of rest by their decisions. The servants who have the seal of God will have a limited amount of protection in the prison of tribulation.

There are those who are holy, and those who are righteous, and some unjust (Rev 22:11). In the tribulation period, two 3 1/2 year periods, the wrath of the Lamb (Rev 6:16, Rev 7:14) and the wrath of God (Rev 14:19), will continue trials of faith. Many will follow delusions, seeking for life, but finding none;
“And for this cause God shall send them strong delusion, that they should believe a lie” 2 Thessalonians 2:11
“And he does great wonders, so that he makes fire come down from heaven on the earth in the sight of men, and deceives them that dwell on the earth by the means of those miracles which he had power to do in the sight of the beast; saying to them that dwell on the earth, that they should make an image to the beast, which had the wound by a sword, and did live.” Revelation 13:13,14
Many saints who remain will not accept the mark or number of the beast (Rev 13:7,8,16). Many Jews who are looking for the Messiah, will find Jesus;
“And one shall say unto him, What are these wounds in thine hands? Then he shall answer, Those with which I was wounded in the house of my friends.” Zechariah 13:6

“And I saw another angel… Saying, Hurt not the earth, neither the sea, nor the trees, till we have sealed the servants of our God in their foreheads. And I heard the number of them which were sealed: and there were sealed an hundred and forty and four thousand of all the tribes of the children of Israel.” Revelation 7:3,4

We should all “contend for the faith that was once delivered to the saints” (Jude 3). We will all sit at the judgement seat;
“For we must all appear before the judgment seat of Christ; that every one may receive the things done in his body, according to that he hath done, whether it be good or bad.” 2 Corinthians 5:10

Before the end, we will also stand on the side of judgement;
“Do ye not know that the saints shall judge the world? and if the world shall be judged by you, are ye unworthy to judge the smallest matters? Know ye not that we shall judge angels?..” 1 Corinthians 6:2,3
“The men of Nineveh shall rise in judgment with this generation, and shall condemn it: because they repented at the preaching of Jonas; and, behold, a greater than Jonas is here. The queen of the south shall rise up in the judgment with this generation, and shall condemn it: for she came from the uttermost parts of the earth to hear the wisdom of Solomon; and, behold, a greater than Solomon is here.” Matthew 12:41,42

You will be patient (2 Thess 3:5) in waiting for Christ;
“Because you hast kept the word of my patience, I also will keep thee from the hour of temptation, which shall come upon all the world, to try them that dwell upon the earth.” Rev 3:10
You will prepare yourself and warn others;
  “And that servant, which knew his lord’s will, and prepared not himself, neither did according to his will, shall be beaten with many stripes. But he that knew not, and did commit things worthy of stripes, shall be beaten with few stripes. For unto whomsoever much is given, of him shall be much required: and to whom men have committed much, of him they will ask the more.” Luke 12:47,48