The purpose of the seven years of tribulation is to awaken the Jewish people as to their true Messiah. Since the Jews rejected Jesus as their Messiah (Savior); Romans 11:7, 8 says, "God has caused them to have a spirit of slumber. Israel needs to be awakened, so they can realize that their true Messiah is Jesus Christ;
The Awesome Untold Story is divided into two parts.
The first 3 1/2 years of the 7 years of tribulation is not the wrath of God, but the wrath of the antichrist, against all who oppose his One World Order. A system designed to exalt Satan through his right-hand man, the antichrist. He will be a counterfeit to Jesus Christ, "King of Kings, and Lord of Lords." Part one is about Satan trying to bring God down to his level, by thwarting God's promises to the Jewish people.
The second 3 1/2 years of the great tribulation will be God pouring out His wrath on the kingdoms of the antichrist. God will systematically disassemble the One World Order that the antichrist will set up during the first 3 1/2 years. All true believers
will have been removed from harm's way, via the rapture, before God's wrath begins in the second 3 1/2 years of tribulation.
At the end of the 7 years of tribulation is the battle of Armageddon; when Jesus will return to rescue the 144,000 Jews who were hiding from the antichrist's military forces.
Then Jesus will establish a peaceful earthly kingdom for 1000 years. Satan will be bound during that time.
The last three chapters will reveal some insightful information about the 1000-year millennial reign of Christ, the Great White Throne Judgment, the New Heaven, New Earth, and New Jerusalem where the saints of God will live forever.