There will be a single government over the face of the earth.
There will be a single religious leader on the face of the earth.
The dictator will demand that he be worshipped as God.
Christianity as we know it will be punishable by death. The Bible says by being beheaded.
There will be wars and rumours of wars, famines, earthquakes, etc.
The seasons will be confused which will undoubtedly contribute to the famines.
Then I heard a loud voice saying in heaven, "...Woe to the inhabitants of the earth and the sea! For the devil has come down to you, having great wrath, because he knows that he has a short time." Now when the dragon saw that he had been cast to the earth, he persecuted the woman who gave birth to the male Child. But the woman was given two wings of a great eagle, that she might fly into the wilderness to her place, where she is nourished for a time and times and half a time, from the presence of the serpent. So the serpent spewed water out of his mouth like a flood after the woman, that he might cause her to be carried away by the flood. But the earth helped the woman, and the earth opened its mouth and swallowed up the flood which the dragon had spewed out of his mouth. And the dragon was enraged with the woman, and he went to make war with the rest of her offspring, who keep the commandments of God and have the testimony of Jesus Christ. (Rev 12:10-15)
He performs great signs, so that he even makes fire come down from heaven on the earth in the sight of men.
And he deceives those who dwell on the earth by those signs which he was granted to do in the sight of the beast, telling those who dwell on the earth to make an image to the beast who was wounded by the sword and lived.
He was granted power to give breath to the image of the beast, that the image of the beast should both speak and cause as many as would not worship the image of the beast to be killed. (Rev 13:13-15)
Then he opened his mouth in blasphemy against God, to blaspheme His name, His tabernacle, and those who dwell in heaven.
It was granted to him to make war with the saints and to overcome them. And authority was given him over every tribe, tongue, and nation.
All who dwell on the earth will worship him, whose names have not been written in the Book of Life of the Lamb slain from the foundation of the world.
If anyone has an ear, let him hear. (Rev 12:6-9)
and I saw the souls of those who had been beheaded because of the testimony of Jesus and the word of God, and those who had not worshipped the beast or his image, and had not received the mark upon their forehead and upon their hand; and they came to life and reigned with Christ for a thousand years. … This is the first resurrection.' (Rev 20:4,5)
Now as He sat on the Mount of Olives opposite the temple, Peter, James, John, and Andrew asked Him privately, "Tell us, when will these things be? And what will be the sign when all these things will be fulfilled?" And Jesus, answering them, began to say: "Take heed that no one deceives you. For many will come in My name, saying, 'I am He,' and will deceive many. But when you hear of wars and rumors of wars, do not be troubled; for such things must happen, but the end is not yet. For nation will rise against nation, and kingdom against kingdom. And there will be earthquakes in various places, and there will be famines and troubles. These are the beginnings of sorrows. But watch out for yourselves, for they will deliver you up to councils, and you will be beaten in the synagogues. You will be brought before rulers and kings for My sake, for a testimony to them. And the gospel must first be preached to all the nations. But when they arrest you and deliver you up, do not worry beforehand, or premeditate what you will speak. But whatever is given you in that hour, speak that; for it is not you who speak, but the Holy Spirit. Now brother will betray brother to death, and a father his child; and children will rise up against parents and cause them to be put to death. And you will be hated by all for My name's sake. But he who endures to the end shall be saved. So when you see the 'abomination of desolation,' spoken of by Daniel the prophet, standing where it ought not" (let the reader understand), "then let those who are in Judea flee to the mountains. Let him who is on the housetop not go down into the house, nor enter to take anything out of his house. And let him who is in the field not go back to get his clothes. But woe to those who are pregnant and to those who are nursing babies in those days! And pray that your flight may not be in winter. For in those days there will be tribulation, such as has not been since the beginning of the creation which God created until this time, nor ever shall be. (Mark 13:3-19)
Now as He sat on the Mount of Olives, the disciples came to Him privately, saying, "Tell us, when will these things be? And what will be the sign of Your coming, and of the end of the age?" And Jesus answered and said to them: "Take heed that no one deceives you. For many will come in My name, saying, 'I am the Christ,' and will deceive many. And you will hear of wars and rumors of wars. See that you are not troubled; for all these things must come to pass, but the end is not yet. For nation will rise against nation, and kingdom against kingdom. And there will be famines, pestilences, and earthquakes in various places. All these are the beginning of sorrows. Then they will deliver you up to tribulation and kill you, and you will be hated by all nations for My name's sake. And then many will be offended, will betray one another, and will hate one another. Then many false prophets will rise up and deceive many. And because lawlessness will abound, the love of many will grow cold. But he who endures to the end shall be saved. And this gospel of the kingdom will be preached in all the world as a witness to all the nations, and then the end will come. (Matthew 24:3-14)