A few examples... this is pretty broad, so I doubt it will all get covered.
Rev 13:15; And it was given to him to give breath to the image of the beast, so that the image of the beast would even speak and cause as many as do not worship the image of the beast to be killed.
Rev 13:16; And he causes all, the small and the great, and the rich and the poor, and the free men and the slaves, to be given a mark on their right hand or on their forehead,
Rev 13:17; and he provides that no one will be able to buy or to sell, except the one who has the mark, either the name of the beast or the number of his name.
Rev 13:18; Here is wisdom. Let him who has understanding calculate the number of the beast, for the number is that of a man; and his number is six hundred and sixty-six.
People on the earth during this time will be forced to worship the beast.
If you want to buy or sell anything, you will have to take the number on your right hand or forehead. (Of course once you do this, you are doomed for eternity).
Rev 14:9; Then another angel, a third one, followed them, saying with a loud voice, "If anyone worships the beast and his image, and receives a mark on his forehead or on his hand,
Rev 14:10; he also will drink of the wine of the wrath of God, which is mixed in full strength in the cup of His anger; and he will be tormented with fire and brimstone in the presence of the holy angels and in the presence of the Lamb.
Rev 14:11; "And the smoke of their torment goes up forever and ever; they have no rest day and night, those who worship the beast and his image, and whoever receives the mark of his name."
Rev 17:12; "The ten horns which you saw are ten kings who have not yet received a kingdom, but they receive authority as kings with the beast for one hour.
Rev 17:13; "These have one purpose, and they give their power and authority to the beast.
It appears that these ten kings (there is much debate over who they might be) will give their kingdoms over to the beast. Increasing his power and authority on the earth. (for a short time)
All authority was given to Jesus, but it seems he relinquishes part of it for a short time.
Rev 13:7; It was also given to him to make war with the saints and to overcome them, and authority over every tribe and people and tongue and nation was given to him.
Rev 13:8; All who dwell on the earth will worship him, everyone whose name has not been written from the foundation of the world in the book of life of the Lamb who has been slain.
Rev 17:16; "And the ten horns which you saw, and the beast, these will hate the harlot and will make her desolate and naked, and will eat her flesh and will burn her up with fire.
Rev 17:17; "For God has put it in their hearts to execute His purpose by having a common purpose, and by giving their kingdom to the beast, until the words of God will be fulfilled.
Rev 17:18; "The woman whom you saw is the great city, which reigns over the kings of the earth."
There is also much debate about who the harlot city might be. But wherever it is, it apparently will "reign over all of the kings of the earth".
However the ten kings and the beast will (make war upon?) take the power away from the harlot and leave her naked and desolate.
Rev 18:2; And he cried out with a mighty voice, saying, "Fallen, fallen is Babylon the great! She has become a dwelling place of demons and a prison of every unclean spirit, and a prison of every unclean and hateful bird.
Rev 18:3; "For all the nations have drunk of the wine of the passion of her immorality, and the kings of the earth have committed acts of immorality with her, and the merchants of the earth have become rich by the wealth of her sensuality."
Rev 18:4; I heard another voice from heaven, saying, "Come out of her, my people, so that you will not participate in her sins and receive of her plagues;
Rev 18:5; for her sins have piled up as high as heaven, and God has remembered her iniquities.
It appears that any Christians that are in Babylon, will be taken out before the plagues of destruction are sent.
Rev 18:8; "For this reason in one day her plagues will come, pestilence and mourning and famine, and she will be burned up with fire; for the Lord God who judges her is strong.
Rev 18:9; "And the kings of the earth, who committed acts of immorality and lived sensuously with her, will weep and lament over her when they see the smoke of her burning,
Rev 18:10; standing at a distance because of the fear of her torment, saying, 'Woe, woe, the great city, Babylon, the strong city! For in one hour your judgment has come.'
Rev 18:12; cargoes of gold and silver and precious stones and pearls and fine linen and purple and silk and scarlet, and every kind of citron wood and every article of ivory and every article made from very costly wood and bronze and iron and marble,
Rev 18:13; and cinnamon and spice and incense and perfume and frankincense and wine and olive oil and fine flour and wheat and cattle and sheep, and cargoes of horses and chariots and slaves and human lives.
Rev 18:14; "The fruit you long for has gone from you, and all things that were luxurious and splendid have passed away from you and men will no longer find them.
It will be either very difficult or impossible for most people to buy extravagant things during this time.
Rev 18:24; "And in her was found the blood of prophets and of saints and of all who have been slain on the earth."
Rev 19:3; And a second time they said, "Hallelujah! HER SMOKE RISES UP FOREVER AND EVER."
There will be some people saved during the tribulation.
Rev 7:13; Then one of the elders answered, saying to me, "These who are clothed in the white robes, who are they, and where have they come from?"
Rev 7:14; I said to him, "My lord, you know." And he said to me, "These are the ones who come out of the great tribulation, and they have washed their robes and made them white in the blood of the Lamb.
Rev 7:15; "For this reason, they are before the throne of God; and they serve Him day and night in His temple; and He who sits on the throne will spread His tabernacle over them.
Apparently many will be beheaded (martyred) for their faith during the tribulation.
Rev 20:4; Then I saw thrones, and they sat on them, and judgment was given to them. And I saw the souls of those who had been beheaded because of their testimony of Jesus and because of the word of God, and those who had not worshiped the beast or his image, and had not received the mark on their forehead and on their hand; and they came to life and reigned with Christ for a thousand years.
Whether there is a rapture, or whether it happens before the tribulation also much debated. But if it happens, you should be ready for it.
Luke 17:31; "On that day, the one who is on the housetop and whose goods are in the house must not go down to take them out; and likewise the one who is in the field must not turn back.
Luke 17:32; "Remember Lot's wife.
Food will be very expensive during this time.
Rev 6:6; And I heard something like a voice in the center of the four living creatures saying, "A quart of wheat for a denarius, and three quarts of barley for a denarius; and do not damage the oil and the wine."
Some Bible translation say it will take a days wages for a loaf of bread.
There are always wars and earthquakes, probably have been since the beginning. But it appears they will get worse.
Matt 24:6; "You will be hearing of wars and rumors of wars. See that you are not frightened, for those things must take place, but that is not yet the end.
Matt 24:7; "For nation will rise against nation, and kingdom against kingdom, and in various places there will be famines and earthquakes.
Matt 24:8; "But all these things are merely the beginning of birth pangs.
Matt 24:10; "At that time many will fall away and will betray one another and hate one another.
Matt 24:12; "Because lawlessness is increased, most people's love will grow cold.
Matt 24:13; "But the one who endures to the end, he will be saved.
2 Pet 3:14; Therefore, beloved, since you look for these things, be diligent to be found by Him in peace, spotless and blameless,
Jude 1:21; keep yourselves in the love of God, waiting anxiously for the mercy of our Lord Jesus Christ to eternal life.
It appears this won't happen until the Gospel is preached all over the earth, but I have to believe with all the missionaries, and radio, and cell phones, and the internet, and television, this time is approaching very quickly.
Matt 24:14; "This gospel of the kingdom shall be preached in the whole world as a testimony to all the nations, and then the end will come.
Matt 24:15; "Therefore when you see the ABOMINATION OF DESOLATION which was spoken of through Daniel the prophet, standing in the holy place (let the reader understand),
There is a lot of debate about the abomination of desolation also. It is mentioned in Matt 24:15; Daniel 11:31; Daniel 12:11; and Mark 13:14;
If you ask me, the verses below apply for the world today.
2 Tim 3:1; But realize this, that in the last days difficult times will come.
2 Tim 3:2; For men will be lovers of self, lovers of money, boastful, arrogant, revilers, disobedient to parents, ungrateful, unholy,
2 Tim 3:3; unloving, irreconcilable, malicious gossips, without self-control, brutal, haters of good,
2 Tim 3:4; treacherous, reckless, conceited, lovers of pleasure rather than lovers of God,
2 Tim 3:5; holding to a form of godliness, although they have denied its power; Avoid such men as these.
2 Pet 3:3; Know this first of all, that in the last days mockers will come with their mocking, following after their own lusts,
2 Pet 3:4; and saying, "Where is the promise of His coming? For ever since the fathers fell asleep, all continues just as it was from the beginning of creation."
We already see many "clergy" and "preachers" advocating same sex marriage or no marriage at all. Some preach that everyone is going to heaven. People will look for this.
2 Tim 4:3; For the time will come when they will not endure sound doctrine; but wanting to have their ears tickled, they will accumulate for themselves teachers in accordance to their own desires,
2 Tim 3:13; But evil men and impostors will proceed from bad to worse, deceiving and being deceived.
The good news is that in the last days, the Lord will give us more knowledge about the "hidden things".
Dan 12:4; "But as for you, Daniel, conceal these words and seal up the book until the end of time; many will go back and forth, and knowledge will increase."