Gods Word shows what happens to the saints who are resurrect in the first resurrection and then for the wicked in the one after the thousand years. Christ Himself tells us what will happen, there will be two resurrections, one for the saints and one when the wicked are brought up for damnation.
John 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.
We also see the same by Paul in Acts..
Acts 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.
Christ and Paul spoke of two resurrections, the first being the resurrection of life for the just, and the second being the resurrection of damnation for the unjust. We also find it in Daniel,
Daniel 12:2
And many of them that sleep in the dust of the earth shall awake, some to everlasting life, and some to shame and everlasting contempt.
Adventist hold that Revelation 20 shows these two resurrections, one at the beginning of the 1000 years, and the other at the end.
I agree there are resurrections to different sentences:
Daniel 12:1-2
1 “At that time Michael shall stand up,
The great prince who stands watch over the sons of your people;
And there shall be a time of trouble,
Such as never was since there was a nation,
Even to that time.
And at that time your people shall be delivered,
Every one who is found written in the book.
2 And many of those who sleep in the dust of the earth shall awake,
Some to everlasting life,
Some to shame and everlasting contempt. (NKJV)
John 5:24-29
24 “Most assuredly, I say to you, he who hears My word and believes in Him who sent Me has everlasting life, and shall not come into judgment, but has passed from death into life. 25 Most assuredly, I say to you, the hour is coming, and now is, when the dead will hear the voice of the Son of God; and those who hear will live. 26 For as the Father has life in Himself, so He has granted the Son to have life in Himself, 27 and has given Him authority to execute judgment also, because He is the Son of Man. 28 Do not marvel at this; for the hour is coming in which all who are in the graves will hear His voice 29 and come forth—those who have done good, to the resurrection of life, and those who have done evil, to the resurrection of condemnation. (NKJV)
Acts 24:15
15 I have hope in God, which they themselves also accept, that there will be a resurrection of the dead, both of the just and the unjust. (NKJV)
However, some of the other texts seem to indicate separating the sheep and the goats, etc.
1Corinthians 4:5 Therefore do not pronounce judgment before the time,
before the Lord comes, who will bring to light the things now hidden in darkness and will disclose the purposes of the heart. Then each one will receive his commendation from God.
2 But we know that the judgment of God is according to truth against those who practice such things. 3 And do you think this, O man, you who judge those practicing such things, and doing the same, that you will escape the judgment of God? 4 Or do you despise the riches of His goodness, forbearance, and longsuffering, not knowing that the goodness of God leads you to repentance? 5 But in accordance with your hardness and your impenitent heart you are treasuring up for yourself wrath in the day of wrath and revelation of the righteous judgment of God, 6 who “will render to each one according to his deeds”: 7 eternal life to those who by patient continuance in doing good seek for glory, honor, and immortality; 8 but to those who are self-seeking and do not obey the truth, but obey unrighteousness—indignation and wrath, 9 tribulation and anguish, on every soul of man who does evil, of the Jew first and also of the Greek; 10 but glory, honor, and peace to everyone who works what is good, to the Jew first and also to the Greek. 11 For there is no partiality with God.
12 For as many as have sinned without law will also perish without law, and as many as have sinned in the law will be judged by the law 13 (for not the hearers of the law are just in the sight of God, but the doers of the law will be justified; 14 for when Gentiles, who do not have the law, by nature do the things in the law, these, although not having the law, are a law to themselves, 15 who show the work of the law written in their hearts, their conscience also bearing witness, and between themselves their thoughts accusing or else excusing them) 16 in the day when God will judge the secrets of men by Jesus Christ, according to my gospel. (NKJV)
Matthew 25:31 “When the Son of Man comes in His glory, and all the holy angels with Him, then He will sit on the throne of His glory.
32 All the nations will be gathered before Him, and He will separate them one from another, as a shepherd divides his sheep from the goats. 33 And He will set the sheep on His right hand, but the goats on the left. 34 Then the King will say to those on His right hand, ‘Come, you blessed of My Father, inherit the kingdom prepared for you from the foundation of the world: 35 for I was hungry and you gave Me food; I was thirsty and you gave Me drink; I was a stranger and you took Me in; 36 I was naked and you clothed Me; I was sick and you visited Me; I was in prison and you came to Me.’ 37 “Then the righteous will answer Him, saying, ‘Lord, when did we see You hungry and feed You, or thirsty and give You drink? 38 When did we see You a stranger and take You in, or naked and clothe You? 39 Or when did we see You sick, or in prison, and come to You?’ 40 And the King will answer and say to them, ‘Assuredly, I say to you, inasmuch as you did it to one of the least of these My brethren, you did it to Me.’ 41 “Then He will also say to those on the left hand, ‘Depart from Me, you cursed, into the everlasting fire prepared for the devil and his angels: 42 for I was hungry and you gave Me no food; I was thirsty and you gave Me no drink; 43 I was a stranger and you did not take Me in, naked and you did not clothe Me, sick and in prison and you did not visit Me.’44 “Then they also will answer [d]Him, saying, ‘Lord, when did we see You hungry or thirsty or a stranger or naked or sick or in prison, and did not minister to You?’ 45 Then He will answer them, saying, ‘Assuredly, I say to you, inasmuch as you did not do it to one of the least of these, you did not do it to Me.’ 46 And these will go away into everlasting punishment, but the righteous into eternal life.”
Matthew 7:21 “Not everyone who says to Me, ‘Lord, Lord,’ shall enter the kingdom of heaven, but he who does the will of My Father in heaven. 22 Many will say to Me in that day, ‘Lord, Lord, have we not prophesied in Your name, cast out demons in Your name, and done many wonders in Your name?’ 23 And then I will declare to them, ‘I never knew you; depart from Me, you who practice lawlessness!’
Matthew 13:30
30 Let both grow together until the harvest, and at the time of harvest I will say to the reapers, “First gather together the tares and bind them in bundles to burn them, but gather the wheat into my barn.” ’ ” (NKJV)
Matthew 13:39-42
39 The enemy who sowed them is the devil, the harvest is the end of the age, and the reapers are the angels. 40 Therefore as the tares are gathered and burned in the fire, so it will be at the end of this age. 41 The Son of Man will send out His angels, and they will gather out of His kingdom all things that offend, and those who practice lawlessness, 42 and will cast them into the furnace of fire. (NKJV)
Matthew 25:19 After a long time the lord of those servants came and settled accounts with them.
20 “So he who had received five talents came and brought five other talents, saying, ‘Lord, you delivered to me five talents; look, I have gained five more talents besides them.’ 21 His lord said to him, ‘Well done, good and faithful servant; you were faithful over a few things, I will make you ruler over many things. Enter into the joy of your lord.’ 22 He also who had received two talents came and said, ‘Lord, you delivered to me two talents; look, I have gained two more talents besides them.’ 23 His lord said to him, ‘Well done, good and faithful servant; you have been faithful over a few things, I will make you ruler over many things. Enter into the joy of your lord.’
24 “Then he who had received the one talent came and said, ‘Lord, I knew you to be a hard man, reaping where you have not sown, and gathering where you have not scattered seed. 25 And I was afraid, and went and hid your talent in the ground. Look, there you have what is yours.’
26 “But his lord answered and said to him, ‘You wicked and lazy servant, you knew that I reap where I have not sown, and gather where I have not scattered seed. 27 So you ought to have deposited my money with the bankers, and at my coming I would have received back my own with interest. 28 So take the talent from him, and give it to him who has ten talents.
29 ‘For to everyone who has, more will be given, and he will have abundance; but from him who does not have, even what he has will be taken away. 30 And cast the unprofitable servant into the outer darkness. There will be weeping and gnashing of teeth.’
Regarding Revelation it does indicate 1k years between the first and second resurrection. Which in some ways seems out of step with the other texts, though the other perspective is that the other texts are compressing the events.
However, the other problem there is that the description of the two resurrections in Revelation are not exactly as Adventists claim.
Revelation 20:4-5
4 And I saw thrones, and they sat on them, and judgment was committed to them. Then I saw the souls of those who had been beheaded for their witness to Jesus and for the word of God, who had not worshiped the beast or his image, and had not received his mark on their foreheads or on their hands. And they lived and reigned with Christ for a thousand years. 5 But the rest of the dead did not live again until the thousand years were finished. This is the first resurrection. (NKJV)
Adventists relate this group to all the righteous at Jesus' coming. But in Revelation this resurrection is more limited to those who have been martyrs and those who have not received the mark of the beast.
Not all Christians were alive when the mark of the beast was in force, depending on how it is interpreted (but even in Adventist interpretation this is the case), and those who lived prior to the incarnation were also not in the category of those who did not receive the mark of the beast.
This is a more select group.
Moreover, the second resurrection is said in Revelation to involve the rest of the dead. Adventists, looking at the texts about the second coming in the rest of Scripture, have seen this as referring to those who did not have saving faith in Christ (or in Adventist thinking did not have their sins blotted out in the IJ).
However, that is also not clear from the text of Revelation:
Revelation 20:11-15
11 Then I saw a great white throne and Him who sat on it, from whose face the earth and the heaven fled away. And there was found no place for them. 12 And I saw the dead, small and great, standing before God, and books were opened. And another book was opened, which is the Book of Life. And the dead were judged according to their works, by the things which were written in the books. 13 The sea gave up the dead who were in it, and Death and Hades delivered up the dead who were in them. And they were judged, each one according to his works. 14 Then Death and Hades were cast into the lake of fire. This is the second death. 15 And anyone not found written in the Book of Life was cast into the lake of fire. (NKJV)
The dead are judged--it doesn't say, as Adventists say, the wicked are judged. And anyone NOT found in the Book of Life was cast into the lake of fire. Which certainly sounds like some were found and were not so cast.
This more corresponds to the other texts which speak of the nations being judged at Christ's throne, sheep and goats being separated, etc.
I have not figured out how it all fits together so far. But we have to look at the details of Revelation for what they say.
And we should base what we do know on clear statements in the NT, and then try to see how the comparably difficult passages in the symbolic prophecy of Revelation tie in with that.
Revelation is Scripture, and is valuable. However, it is not as straight-forward. All the texts have to fit together.
