The Great Tribulation will NOT last seven years. It will begin in the MIDDLE of Daniel's Seventieth Week. When the Assyrian Man of Sin stands in the newly-built Third Temple, he will commit the Abomination of Desolation prophesied in Daniel 9:27, and by Jesus Christ in Matthew 24:15. For the FINAL 42 MONTHS, the new Temple will remain desolate. The World Government will control the Temple Mount under a Muslim pretext/puppet. The Mark of the Beast will immediately be launched. True Christians will have no choice but to REFUSE to take the Mark. Those 42 months will be the Great Tribulation. Jesus Christ will supernaturally seal (with the Holy Ghost) 144,000 virgin male Jews, and they will be the firstfruits from the earth. The Sixth Trumpet war will unleash the greatest global holocaust of all time. One-third of mankind will die. Russia and Iran will be the strongest survivors of the Sixth Trumpet, and will launch the final battle against Israel to utterly annihilate it.
Shortly before Armageddon begins, enemies of the Roman Catholic Church (probably Muslims) will destroy it. Then God Himself will pour out His wrath on Rome. A world-wide earthquake will leave Rome utterly destroyed. Physically, Rome will be broken into three land masses, and fire from Heaven will utterly consume it, never to be inhabited again.
The Seven Vials of God's Wrath will be poured out on those who have taken the Mark of the Beast (but NOT on the saints of God who still survive). Then Jesus Christ will thrust in His sickle and reap the Wheat Harvest: the First Resurrection and Rapture of the Church, at the SEVENTH Trumpet (the LAST Trumpet). Angels will gather together the Grapes of Wrath: the rabid enemies of Israel and Christ, and gather them together in the Valley of Megiddo for Christ and His Hosts to utterly destroy at the Battle of Armageddon.
Suddenly, Jesus will appear in the skies over Jerusalem, with all the saints of all the ages with Him. He will destroy the armies that have come against Israel. He will destroy the Beast of the European World Government and the False Prophet of the Roman Catholic Church - the Pope. He will destroy the Assyrian Man of Sin on His Holy Mountain - the Temple Mount. An angel will cast Satan into the bottomless pit. A great earthquake will open the Eastern Gate which has been closed for 1400 years.
Jesus will lead His saints onto the Temple Mount from the Valley of Jehoshaphat, and there they will crown Him King of Kings and Lord of Lords. We will celebrate the Marriage Supper of the Lamb, and Jesus will order the construction of His Millennial Temple. All the Jews will have been resurrected from the dead, and will look upon Jesus whom they pierced. They will mourn and repent of their great error, and He will fill them with His Spirit and write His laws in their hearts. For 1,000 years, Jesus Christ will rule the World from Jerusalem. David will rule Israel as the Prince under Christ. The twelve Apostles will rule the 12 tribes of Israel in the Holy Land.
The Christian saints will rule all the nations and cities of the world during that time. Mortals who survived Armageddon will be ruled by Christ's immortal saints. At the end of 1,000 years, Satan will be loosed and attempt to pull off another Armageddon, but the fire of God will fall on him and he will be cast into the Lake of Fire forever. All the wicked dead will be raised to face their judgment at the White Throne, where they will be cast bodily into the eternal lake which burns with fire and brimstone. All the saints will meet Christ at the White Throne where they will receive their eternal rewards for their righteous works.
Heaven and Earth will melt with a fervent heat. A New Heaven and New Earth will appear, and the NEW JERUSALEM (the saints of God) will appear descending upon the New Earth. For all of eternity, the saints of God will dwell with Christ in His infinite Kingdom of Heaven. Sin and Satan will have been banished forever. All these facts are explained in great detail in THE DANIEL PROPHECIES.
Get it and read it.