There are many false doctrines out there that stem from a misunderstanding of the resurrection. I pray this helps your understanding.
The first resurrection harvest began in Matthew 27:52 It has three phases:Pesach, Shavout, Succoth Spring, Summer, Fall, it begins with first fruits, and ends with gleanings at the end.
Matthew 27:52 And the graves were opened; and many bodies of the saints which slept arose, 53 And came out of the graves after his resurrection, and went into the holy city, and appeared unto many. These are the OT saints that arose and are now in the New Jerusalem. They were the first fruits of the barley harvest, offered to God in the heavenly temple.
1 Thess 4:13-17 But I would not have you to be ignorant, brethren, concerning them which are asleep, that ye sorrow not, even as others which have no hope.
For if we believe that Jesus died and rose again, even so them also which sleep in Jesus will God bring with him.For this we say unto you by the word of the Lord, that we which are alive and remain unto the coming of the Lord shall not prevent them which are asleep: 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. Wherefore comfort one another with these words. This is the main barley harvest. The taking of the bride ALSO occurs immediately after this harvest. More harvests follow. The harvests take the dead saints. rapture takes the living.
Tribulation saints: after the rapture, up to Rev 14:16: “and the earth was reaped” Fall/Succoth/olives: (unbelievers being the grapes, not resurrected, but killed.)
Revelation 20And I saw thrones, and they sat upon them, and judgment was given unto them: and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands; and they lived and reigned with Christ a thousand years.
But the rest of the dead lived not again until the thousand years were finished. This is the first resurrection. 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.
The last part of the harvest is the gleanings. The dead from the mellinial reign will be the honey, figs and pomegranites, and the dead saints will be resurrected at the great white throne judgement to eternal life, and to receive their rewards. The unbelieving dead from the mellinial reign will also be resurrected, as well as the ones in hell, to receive final judgement, and be cast into the lake of fire.
Rev 20.11And I saw a great white throne, and him that sat on it, from whose face the earth and the heaven fled away; and there was found no place for themAnd I saw the dead, small and great, stand before God; and the books were opened: and another book was opened, which is the book of life: and the dead were judged out of those things which were written in the books, according to their worksAnd the sea gave up the dead which were in it; and death and hell delivered up the dead which were in them: and they were judged every man according to their works. And death and hell were cast into the lake of fire. This is the second death. And whosoever was not found written in the book of life was cast into the lake of fire.
See part 2, “our future, kings and priests unto God”. Confirm this with your own study. God bless!