This is where prophecy comes in. Prophecy is the future told in advance. In order for the future to be told with such detail accuracy in its fulfillment, only God, who is outside of time and the author of history, can do so.
"There is no way to explain the Bible's ability to predict the future unless we see God as its Author. For example, the Old Testament contains more than three hundred references to the Messiah of Israel that were precisely fulfilled by JesusChrist (Christ is the Greek translation of the Hebrew word Messiah). Peter Stoner, a scientist in the area of mathematical probabilities, said in his book Science Speaks that if we take just eight of the Old Testament prophecies Christ fulfilled, we find that the probability of their coming to pass is one in 1017." (source)
God said that this world will end. This affects every human being living at the time of when it happens. During the Tribulation, it will be a time of UNcreation, when the orderly creation account we read in Genesis is reversed but in a chaotic and horrific way. For example, every island will flee away and every mountain will be thrown down. (Revelation 16:20). This prophesied event will affect every person living on the planet. For those who are not alive during this period when God's wrath descends to earth, affecting everyone on it, He said that some will be awakened to everlasting life and others to everlasting wrath. (Daniel 12:2). Either way, prophecy has meaning for every person who ever lived or is living at the time of fulfillment, believer in Jesus or not a believer. Therefore, prophecy is of utmost importance.
The purpose of prophecy
Considering such weighty emphasis upon prophecy in the Scriptures, we may properly ask regarding its purpose in God’s unfolding plan. Why did our heavenly Father cause so much of his word and revelation to consist of prophetic utterances that spoke of future times, circumstances, and events? All Scripture, we understand, "is profitable for doctrine, for reproof, for correction, for instruction in righteousness" (2 Tim. 3:16). But what is the special role that prophecy holds in influencing the life of the believer?" (source)
All scripture is profitable. (2 Timothy 3:16-17). Since two-thirds of the bible is prophecy, it is obvious that God put the words of prophecy in the bible to profit us for His purposes.
Prophecy exists to reveal the glory of God:
"I am God, and there is none like me, declaring the end from the beginning, and from ancient times the things that are not yet done" (Isa. 46:9, 10).
Prophecy exists to establish the bible's credibility and to authenticate the biblical speakers of prophecy, including the Triune God and the men that God designated to speak His words. (2 Peter 1:21).
Prophecy exists to enlighten the believer and to stimulate to activity. (Mark 13:23). (source)
I hope you understand by now how important prophecy is to the believer and non-believer alike. So the next question is,
What does God say is going to happen?
God has been working since before the foundation of the world. He is still working. (John 5:17). After He created humans there was an entire span of time He was doing works that will result in His glory. But then Jesus came. In the days of His flesh (Hebrews 5:7) Jesus taught and performed signs and miracles to prove who He was. Then He was killed and nailed to a cross and absorbed all God's wrath for sinners. (2 Corinthians 5:21, Isaiah 53:5-6).
Pleased with His son's obedience, God raised Jesus on the third day and soon after, Jesus ascended to heaven to be at the right hand of the Father. (Hebrews 12:2). When Jesus ascended, the Spirit came and thus began this present age, the age where Jesus is building His church. (Matthew 16:18).
When the church is complete, Jesus will call His church to heaven in an event known as the rapture. (Romans 11:25, 2 Thess 2:1-12, 1 Thess 4:16, 1 Corinthians 15:52). All those who have come to saving faith in Him since He began building His church will arise from their graves or from their live bodies, be glorified instantly and meet Jesus in the air. He will lead us to heaven, where we will enjoy the Bema Rewards ceremony where our works we performed while int he flesh will be tested. Then we'll having received our crowns for works done in His name on earth that stood the test.
During that time in heaven there will be ceremonies and activities and hallelujahs and praise. But back on earth, there will be Tribulation. (Matthew 24:21). This tribulation will involve Israel, and the whole world. Since all believers will have been taken to heaven at the rapture, and along with them, the indwelling Holy Spirit, His restraining ministry will cease.
Did you know that the Spirit restrains man from the worst they can do? Did you ever wonder why there isn't a Hitler or a Jeffrey Dahmer every day? Man are totally depraved and sinful, but they don't do their worst because the Spirit restrains us. (Genesis 6:3). When Jesus calls us to Him in heaven the Spirit will still draw men to belief but He won't restrain sin. Sin will be loosed to run fully rampant. (Daniel 9:27).
It will be a time of unparalleled evil in the world. Murders and heinous acts and death and disease and horror and hell on earth. It will be a time of the uncreation of the world. Volcanoes, earthquakes, heat, hail, drought, bloody waters, and more. Demons marauding and putrid corpses. Hell.
This tribulation will begin immediately after the rapture. It will last 7 years. Most of the world will die.
Then at the end of the Tribulation, Jesus will return. He will rescue His remnant left on earth, kill the armies assembled against Him at Armageddon, and install His throne on earth. peace will reign for 1000 years. This is called the Millennial Kingdom, because it will last 1000 years. Ezekiel 41 onward has the scene.
At the end of that time, satan who had been bound for the 1000 years, will be loosed so as to deceive the nations one last time, and many will follow him. Jesus will squash the rebellion, he will be thrown into the Lake of Fire, and all who ever lived will be resurrected to face their judgment. This is known as the Great White Throne Judgment (Revelation 20:11-15) and it will occur at the end of time. Glorified bodies will be given to those who are raised from death, so that those who are destined for hell can withstand their eternal punishment, and those who are destined for eternity with Jesus can withstand looking Him full in the face with all His glory. The eternal state will begin as the earth melts away. (2 Peter 3:10). The bible doesn't say what comes next.
So if you have followed along, the rapture is the next event in God's long, long plan for humankind. Please be on board with all that is required to join Jesus in the air. You don't need your money. You don't need your works. You don't need baggage or clothes, those will be provided. All you need is faith in the work and person of Jesus Christ, to lay your sin down at His feet, sorrowful for your blasphemies against Him. This is called repentance. He will forgive you of those crimes and invite you to His abode in heaven, He will give you His spirit as a seal of the guarantee of your place.
"Therefore let us not sleep, as do others; but let us watch and be sober" (1 Thess 5:6).
"But the end of all things is at hand: be ye therefore sober, and watch unto prayer" (1 Peter 4:7).