If you are reading this and millions of people have just vanished off of the face of the earth, you have been left behind. There are several key points that you must know and understand in a very short time. Your eternal life depends upon this.
The disappearance of the millions of people was the rapture. It was foretold in the bible. All of the people who were taken away were Christians. They were not beamed aboard a spaceship by aliens, or anything as absurd as that. Jesus Christ came back to call us home. He will also be returning to earth in about seven years to judge everyone. No matter how terrible things might get, you have to remember that all of these things will pass away when Jesus returns. Make sure you know which side you're on.
Whatever explanations are being circulated by the media/politicians/religious leaders are wrong. I can only imagine how they will try to explain the disappearances. I believe that there will be some sort of new age/mystical explanation that involve UFO's. They will try to gloss this disappearance over as soon as possible and start reporting on a world leader who will seem to able to solve all of the world's problems. He is the antichrist.
God is real, Satan is real, heaven and hell are real. You might wonder why I would stress this, but please follow me for a moment. Many people in this day and age have an inability to imagine anything beyond what can be proven by science. My friend, God loves you so much that He sent His only begotten Son to die on the cross for our sins. God wants you to be with Him in heaven. It doesn't matter what you've done up to this time, He will accept you with open arms. The only exception to this is if you accept the mark of the beast. This mark will most probably be a tattoo or micro chip embedded in your forehead and/or hand. Once you accept the mark of the beast, you have willingly and knowingly turned your back on God. If you accept the mark of the beast or if you die before accepting Jesus Christ as your personal Savior, then you will go to hell. Hell is not a place of parties, fun, and hanging out with all the other people in hell. Hell is a place of torments that are beyond your imagination. Hell is for eternity. Satan doesn't want people to think that heaven or hell are real, he is the father of lies. A lot of people are going to believe Satan's lies and be led to hell, please don't be one of them.
Your only hope is accepting Jesus Christ as your personal Savior. Don't despair that you have been left behind. You still have the chance to make the right choice. I won't mince words about what this decision means to your life on earth. You are going to be hated by a large majority of the people left on earth when you become a Christian. There will most likely be a price on your head within 3 1/2 years. Your own relatives will despise you and may turn you in to collect a reward. Many Christians and Jews are going to be killed when they refuse to accept the mark of the beast. When they institute the mark of the beast, you will not be able to buy or sell anything without the mark of the beast. Life will be very difficult without being able to buy food, clothes, medicine, etc. You will be pressured from the government, friends, family, and perhaps even your own spouse to receive this mark in order to survive. DO NOT ACCEPT THE MARK OF THE BEAST! God will not place anything on your shoulders that you cannot bear if you trust in Him. Do not put off your decision of accepting Jesus Christ as your personal Savior another minute! Many people are going to die and it would be the worst mistake of your life to put off your decision and then die without eternal salvation. All you have to do is pray a simple prayer and honestly mean it. Tell God that you know that you are a sinner and you believe that Jesus Christ paid the penalty for your sins on the cross. Ask Him to forgive your sins and for strength and guidance in the days ahead.
After praying this prayer, find a bible and start reading the New Testament books of Matthew, Mark, Luke, & John. Then read the book of Revelation (it's the last book in the bible). The book of Revelation describes the period of history that you are about to go through and it also describes what's going to happen after Jesus returns to earth. As a Christian you are destined for heaven and there aren't enough words in any language to describe how wonderful it will be, you've got to see it for yourself. (Normally I would suggest you start from the beginning of the bible, but time is short - after you make it through the New Testament then read the Old Testament).
I look forward to seeing you in heaven!