Joel 2:1-2
Blow ye the trumpet in Zion, and sound an alarm in my holy mountain: let all the inhabitants of the land tremble: for the day of the LORD cometh, for [it is] nigh at hand;
2:2 A day of darkness and of gloominess, a day of clouds and of thick darkness, as the morning spre

Revelation 8:1
And when he had opened the seventh seal, there was silence in heaven about the space of half an hour. 8:2 And I saw the seven angels who stood before God; and to them were given seven trumpets. 8:3 And another angel came and stood at the altar, having a golden censer;

mark 13:19-31
19«For those days will be a time of tribulation such as has not occurred since the beginning of the creation which God created until now, and never will.
20«Unless the Lord had shortened those days, no life would have been saved; but for the sake of the elect, whom He chose, He shortened the days.
21«And then if anyone says to you, "Behold, here is the Christ'; or, "Behold, He is there'; do not believe him;
22for false Christs and false prophets will arise, and will show signs and wonders, in order to lead astray, if possible, the elect.
23«But take heed; behold, I have told you everything in advance.
24«But in those days, after that tribulation, THE SUN WILL BE DARKENED AND THE MOON WILL NOT GIVE ITS LIGHT,
25AND THE STARS WILL BE FALLING from heaven, and the powers that are in the heavens will be shaken.
26«Then they will see THE SON OF MAN COMING IN CLOUDS with great power and glory. 27«And then He will send forth the angels, and will gather together His elect from the four winds, from the farthest end of the earth to the farthest end of heaven.
28«Now learn the parable from the fig tree: when its branch has already become tender and puts forth its leaves, you know that summer is near.
29«Even so, you too, when you see these things happening, recognize that He is near, right at the door.
30«Truly I say to you, this generation will not pass away until all these things take place.
31«Heaven and earth will pass away, but My words will not pass away.

matthew 24:
3As He was sitting on the Mount of Olives, the disciples came to Him privately, saying, «Tell us, when will these things happen, and what will be the sign of Your coming, and of the end of the age?»
4And Jesus answered and said to them, «See to it that no one misleads you.
5«For many will come in My name, saying, "I am the Christ,' and will mislead many.
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.
7«For nation will rise against nation, and kingdom against kingdom, and in various places there will be famines and earthquakes.
8«But all these things are merely the beginning of birth pangs.
9«Then they will deliver you to tribulation, and will kill you, and you will be hated by all nations because of My name.
10«At that time many will fall away and will betray one another and hate one another.
11«Many false prophets will arise and will mislead many.
12«Because lawlessness is increased, most people's love will grow cold.
13«But the one who endures to the end, he will be saved.
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.
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),
16then those who are in Judea must flee to the mountains;
17Whoever is on the housetop must not go down to get the things out that are in his house.
18Whoever is in the field must not turn back to get his cloak.
19«But woe to those who are pregnant and to those who are nursing babies in those days!
20«But pray that your flight will not be in the winter, or on a Sabbath.
21For then there will be a great tribulation, such as has not occurred since the beginning of the world until now,
nor ever will. 22«Unless those days had been cut short, no life would have been saved; but for the sake of the elect those days will be cut short.
23«Then if anyone says to you, "Behold, here is the Christ,' or "There He is,' do not believe him.
24«For false Christs and false prophets will arise and will show great signs and wonders, so as to mislead, if possible, even the elect.
25«Behold, I have told you in advance.
26«So if they say to you, "Behold, He is in the wilderness,' do not go out, or, "Behold, He is in the inner rooms,' do not believe them.
27«For just as the lightning comes from the east and flashes even to the west, so will the coming of the Son of Man be.
28«Wherever the corpse is, there the vultures will gather.
29«But immediately after the tribulation of those days THE SUN WILL BE DARKENED, AND THE MOON WILL NOT GIVE ITS LIGHT, AND THE STARS WILL FALL from the sky, and the powers of the heavens will be shaken.
30And then the sign of the Son of Man will appear in the sky, and then all the tribes of the earth will mourn, and they will see the SON OF MAN COMING ON THE CLOUDS OF THE SKY with power and great glory.
31«And He will send forth His angels with A GREAT TRUMPET and THEY WILL GATHER TOGETHER His elect from the four winds, from one end of the sky to the other.
32«Now learn the parable from the fig tree: when its branch has already become tender and puts forth its leaves, you know that summer is near;
33So, you too, when you see all these things, recognize that He is near, right at the door.
34«Truly I say to you, this generation will not pass away until all these things take place.
35«Heaven and earth will pass away, but My words will not pass away.
36«But of that day and hour no one knows, not even the angels of heaven, nor the Son, but the Father alone.
37«For the coming of the Son of Man will be just like the days of Noah.
38«For as in those days before the flood they were eating and drinking, marrying and giving in marriage, until the day that Noah entered the ark,
39and they did not understand until the flood came and took them all away; so will the coming of the Son of Man be.
40«Then there will be two men in the field; one will be taken and one will be left.
41«Two women will be grinding at the mill; one will be taken and one will be left.
42«Therefore be on the alert, for you do not know which day your Lord is coming.
43«But be sure of this, that if the head of the house had known at what time of the night the thief was coming, he would have been on the alert and would not have allowed his house to be broken into.
44«For this reason you also must be ready; for the Son of Man is coming at an hour when you do not think He will.

Acts 2:17-21
17"AND IT SHALL BE IN THE LAST DAYS,' God says, "THAT I WILL POUR FORTH OF MY SPIRIT ON ALL MANKIND; AND YOUR SONS AND YOUR DAUGHTERS SHALL PROPHESY, AND YOUR YOUNG MEN SHALL SEE VISIONS, AND YOUR OLD MEN SHALL DREAM DREAMS;
18EVEN ON MY BONDSLAVES, BOTH MEN AND WOMEN, I WILL IN THOSE DAYS POUR FORTH OF MY SPIRIT And they shall prophesy.
19"AND I WILL GRANT WONDERS IN THE SKY ABOVE AND SIGNS ON THE EARTH BELOW, BLOOD, AND FIRE, AND VAPOR OF SMOKE.
20"THE SUN WILL BE TURNED INTO DARKNESS AND THE MOON INTO BLOOD, BEFORE THE GREAT AND GLORIOUS DAY OF THE LORD SHALL COME.
21"AND IT SHALL BE THAT EVERYONE WHO CALLS ON THE NAME OF THE LORD WILL BE SAVED.'

Revelation 8
1WHEN the Lamb broke the seventh seal, there was silence in heaven for about half an hour.
2And I saw the seven angels who stand before God, and seven trumpets were given to them.
me and stood at the altar, holding a golden censer; and much incense was given to him, so that he might add it to the prayers of all the saints on the golden altar which was before the throne. 4And the smoke of the incense, with the prayers of the saints, went up before God out of the angel's hand.
5Then the angel took the censer and filled it with the fire of the altar, and threw it to the earth; and there followed peals of thunder and sounds and flashes of lightning and an earthquake.
6And the seven angels who had the seven trumpets prepared themselves to sound them.

Rev.6:12-17
12 I looked when He broke the sixth seal, and there was a great earthquake; and the sun became black as sackcloth made of hair, and the whole moon became like blood;
13and the stars of the sky fell to the earth, as a fig tree casts its unripe figs when shaken by a great wind.
14The sky was split apart like a scroll when it is rolled up, and every mountain and island were moved out of their places.
15Then the kings of the earth and the great men and the commanders and the rich and the strong and every slave and free man hid themselves in the caves and among the rocks of the mountains;
16and they said to the mountains and to the rocks, «Fall on us and hide us from the presence of Him who sits on the throne, and from the wrath of the Lamb;
17for the great day of their wrath has come, and who is able to stand?»

rev. 7:9-17
9After these things I looked, and behold, a great multitude which no one could count, from every nation and all tribes and peoples and tongues, standing before the throne and before the Lamb, clothed in white robes, and palm branches were in their hands;
10and they cry out with a loud voice, saying, «Salvation to our God who sits on the throne, and to the Lamb.»
11And all the angels were standing around the throne and around the elders and the four living creatures; and they fell on their faces before the throne and worshiped God,
12saying, «Amen, blessing and glory and wisdom and thanksgiving and honor and power and might, be to our God forever and ever. Amen.»
13Then 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?»
14I 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.
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.
16«They will hunger no longer, nor thirst anymore; nor will the sun beat down on them, nor any heat;
17for the Lamb in the center of the throne will be their shepherd, and will guide them to springs of the water of life; and God will wipe every tear from their eyes.»

rev.10:7
7but in the days of the voice of the seventh angel, when he is about to sound, then the mystery of God is finished, as He preached to His servants the prophets.