According to the bible there will be troubles and persecutions,for the troubles at that time will be far more terrible than any there has ever been , from the beginning of the world to this very day.Nor will there ever be anything like it again.But God has already reduced the number of days ,had he not done so , nobody would survive.For the sake of his chosen people,however , God will reduce the days.Matthew 24:21-22.Jesus answered , "BE ON YOUR GUARD and do not let anyone deceive you . Matthew 24:3-4 .The coming of the Son of Man will be like what happened in the time of Noah.In the days before the flood people ate and drank,men and women married, up to the very day Noah went into the boat. Matthew 24:37-39.BE ON YOUR GOURD , then ,because you do not know what day your Lord will come.Do not let anyone deceive you in any way. For the Day will not come until the finale Rebellion takes place and the Wicked One appears,who is destined for hell. He will oppose every so -called god or object of worship and will put himself above them all. He will even go in and sit down in God's Temple and claim to be God.Yet there is something that keeps this from happening now ,and you know what it is.At the proper time, then , the Wicked One will . The Mysterious Wickedness is already at work , but what is going to happen will not happen until the one who holds it back is taken out of the way .2Thessalonians 2:3-17.BE ON THE ALERT and PRAY always that you will have the strength to go safely through all those things that will happen and to stand before the Son of Man.Luke 22:34-37.Whoever has this hope to stand before the Son of God purify himself." Soon after the trouble of those days, the sun will grow dark, the moon will no longer shine,the stars will fall from heaven,and the powers in space will be driven from their courses .The the sign of the Son of Man will appear in the sky, and all the people of earth will weep as they see the Son of Man coming on the clouds of heaven with power and great glory .The great trumpet sounds, and he will send out his angels to the four corners of the earth and they will gather HIS CHOSEN people from one end of the world to the other Matthew 24:29-31And lastly 2 Thessalonians 4:15-17