And as he sat upon the mount of Olives, the disciples came unto him privately, saying, Tell us, when shall these things be? and what shall be the sign of thy coming, and of the end of the world? - Matthew 24:3 (King James Version)
And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come. - Matthew 24:14 (KJV)
When ye therefore shall see the abomination of desolation, spoken of by Daniel the prophet, stand in the holy place, (whoso readeth, let him understand:) ... For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be. And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened. - Matthew 24:15-22 (KJV)
11:40 At the time of the end shall the king of the south contend with him; and the king of the north shall come against him like a whirlwind, with chariots, and with horsemen, and with many ships; and he shall enter into the countries, and shall overflow and pass through. 41 He shall enter also into the glorious land, and many countries shall be overthrown; but these shall be delivered out of his hand: Edom, and Moab, and the chief of the children of Ammon*. 42 He shall stretch out his hand also on the countries; and the land of Egypt shall not escape. 43 But he shall have power over the treasures of gold and of silver, and over all the precious things of Egypt; and the Libyans and the Ethiopians^ shall be at his steps.
* modern day Jordan ^ includes modern day Sudan
44 But news out of the east and out of the north shall trouble him; and he shall go out with great fury to destroy and utterly to sweep away many. 45 He shall plant the tents of his palace between the sea and the glorious holy mountain; yet he shall come to his end, and no one shall help him.
12:1 "At that time shall Michael stand up, the great prince who stands for the children of your people; and there shall be a time of trouble, such as never was since there was a nation even to that same time: and at that time your people shall be delivered, everyone who shall be found written in the book. 2 Many of those who sleep in the dust of the earth shall awake, some to everlasting life, and some to shame and everlasting contempt. - Daniel 11:40-12:2 (WEB)
And there was war in heaven: Michael and his angels going forth to war with the dragon; and the dragon warred and his angels; And they prevailed not, neither was their place found any more in heaven. And the great dragon was cast down, the old serpent, he that is called the Devil and Satan, the deceiver of the whole world; he was cast down to the earth, and his angels were cast down with him. - Revelation 12:7-9 (ASV)
And I saw three unclean spirits like frogs come out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet. For they are the spirits of devils, working miracles, which go forth unto the kings of the earth and of the whole world, to gather them to the battle of that great day of God Almighty. ... And he gathered them together into a place called in the Hebrew tongue Armageddon. - Revelation 16:13-16 (KJV)
I saw a new heaven and a new earth: for the first heaven and the first earth have passed away, and the sea is no more. ... "He will wipe away from them every tear from their eyes. Death will be no more; neither will there be mourning, nor crying, nor pain, any more. The first things have passed away."
- Revelation 21:1, 4 (WEB)