Actually, that is not the same as the Great White Throne judgment. The sheep and the goats are judged immediately before the Millennium. The GWT is some time AFTER the Millennium, and includes all the unsaved dead from the very beginning. Two different judgments.
All cases, every person, every believer and unbeliever will be judged. God will judge the whole world before He comes.
Psa_9:8 And he shall judge the world in righteousness, he shall minister judgment to the people in uprightness.
Act 17:31 Because
he hath appointed a day, in the which
he will judge the world in righteousness by that man whom he hath ordained; whereof he hath given assurance unto all men, in that he hath raised him from the dead.
God will only know how to minister His wrath and vengeance if people have been judged. God will only know who are saved and who are unsaved unless all are judged and every case is decided.
Mat_12:36 But I say unto you, That every idle word that men shall speak, they shall give account thereof
in the day of judgment.
Mat_10:15 Verily I say unto you, It shall be more tolerable for the land of Sodom and Gomorrha in
the day of judgment, than for that city.
When Jesus comes every case will be decided or judged.
Luk 14:14 And thou shalt be blessed; for they cannot recompense thee: for thou shalt be recompensed at
the resurrection of the just.
Rev_20:6 Blessed and holy is he that hath part in the
first resurrection: on such the second death hath no power, but they shall be priests of God and of Christ, and shall reign with him a thousand years.
Act 24:15 And have hope toward God, which they themselves also allow, that
there shall be a resurrection of the dead, both of the just and unjust.
only 2 resurrections
God must know who is part of the first and second because there isn't a 3rd or 4th.
1Th 4:16 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:
1Th 4:17 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.
Joh 5:28 Marvel not at this: for the hour is coming, in the which all that are in the graves shall hear his voice,
Joh 5:29 And shall come forth; they that have done good, unto
the resurrection of life; and they that have done evil, unto
the resurrection of damnation.
Don't be fooled into thinking there will be multiple resurrections for second chances. once the judgement is finished every case is decided.