Rev 6:12-17  12 When he opened the sixth seal, I looked, and behold, there was a great earthquake, and the sun became black as sackcloth, the full moon became like blood, 13 and the stars of the sky fell to the earth as the fig tree sheds its winter fruit when shaken by a gale. 14 The sky vanished like a scroll that is being rolled up, and every mountain and island was removed from its place. 15 Then the kings of the earth and the great ones and the generals and the rich and the powerful, and everyone, slave and free, hid themselves in the caves and among the rocks of the mountains, 16 calling to the mountains and rocks, "Fall on us and hide us from the face of him who is seated on the throne, and from the wrath of the Lamb, 17 for the great day of their wrath has come, and who can stand?"

Rev 7:1-16   7 After this I saw four angels standing at the four corners of the earth, holding back the four winds of the earth, that no wind might blow on earth or sea or against any tree. 2 Then I saw another angel ascending from the rising of the sun, with the seal of the living God, and he called with a loud voice to the four angels who had been given power to harm earth and sea, 3 saying, "Do not harm the earth or the sea or the trees, until we have sealed the servants of our God on their foreheads." 4 And I heard the number of the sealed, 144,000, sealed from every tribe of the sons of Israel:

5 12,000 from the tribe of Judah were sealed,
   12,000 from the tribe of Reuben,
   12,000 from the tribe of Gad,
6 12,000 from the tribe of Asher,
   12,000 from the tribe of Naphtali,
   12,000 from the tribe of Manasseh,
7 12,000 from the tribe of Simeon,
   12,000 from the tribe of Levi,  
   12,000 from the tribe of Issachar,
8 12,000 from the tribe of Zebulun,
   12,000 from the tribe of Joseph,
   12,000 from the tribe of Benjamin were sealed.

   A Great Multitude from Every Nation    
9 After this I looked, and behold, a great multitude that no one could number, from every nation, from all tribes and peoples and languages, standing before the throne and before the Lamb, clothed in white robes, with palm branches in their hands, 
10 and crying out with a loud voice, "Salvation belongs to our God who sits on the throne, and to the Lamb!" 11 And 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, 
12 saying, "Amen! Blessing and glory and wisdom and thanksgiving and honor and power and might be to our God forever and ever! Amen."
13 Then one of the elders addressed me, saying, "Who are these, clothed in white robes, and from where have they come?" 14 I said to him, "Sir, you know." And he said to me, "These are the ones coming out of the great tribulation. They have washed their robes and made them white in the blood of the Lamb.
15 "Therefore they are before the throne of God, and serve him day and night in his temple; and he who sits on the throne will shelter them with his presence.
16 Thy shall hunger no more, neither thirst anymore; the sun shall not strike them, nor any scorching heat.
Matt 24:29-32   29 "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 heaven, and the powers of the heavens will be shaken. 30 Then will appear in heaven the sign of the Son of Man, and then all the tribes of the earth will mourn, and they will see the Son of Man coming on the clouds of heaven with power and great glory. 31 And he will send out his angels with a loud trumpet call, and they will gather his elect from the four winds, from one end of heaven to the other.
Mark 13:24-27   24 "But in those days, after that tribulation, the sun will be darkened, and the moon will not give its light, 25 and the stars will be falling from heaven, and the powers in the heavens will be shaken. 26 And then they will see the Son of Man coming in clouds with great power and glory. 27 And then he will send out the angels and gather his elect from the four winds, from the ends of the earth to the ends of heaven. 
Luke 21:25-28   25 "And there will be signs in sun and moon and stars, and on the earth distress of nations in perplexity because of the roaring of the sea and the waves, 26 people fainting with fear and with foreboding of what is coming on the world. For the powers of the heavens will be shaken. 27 And then they will see the Son of Man coming in a cloud with power and great glory. 28 Now when these things begin to take place, straighten up and raise your heads, because your redemption is drawing near." 
Acts 7:55-60   55 But he, full of the Holy Spirit, gazed into heaven and saw the glory of God, and Jesus standing at the right hand of God. 56 And he said, "Behold, I see the heavens opened, and the Son of Man standing at the right hand of God." 57 But they cried out with a loud voice and stopped their ears and rushed together at him. 58 Then they cast him out of the city and stoned him. And the witnesses laid down their garments at the feet of a young man named Saul. 59 And as they were stoning Stephen, he called out, "Lord Jesus, receive my spirit." 60 And falling to his knees he cried out with a loud voice, "Lord, do not hold this sin against them." And when he had said this, he fell asleep. 
Acts 2:17-21   17 "'And in the last days it shall be, God declares,
 that I will pour out my Spirit on all flesh,
and your sons and your daughters shall prophesy,
and your young men shall see visions,
and your old men shall dream dreams;
18 even on my male servants and female servants
in those days I will pour out my Spirit, and they shall prophesy.
19 And I will show wonders in the heavens above
and signs on the earth below,
blood, and fire, and vapor of smoke;
20 the sun shall be turned to darkness
and the moon to blood,
before the day of the Lord comes, the great and magnificent day.
21 And it shall come to pass that everyone who calls upon the name of the Lord shall be saved.'

Rev 12:11-12                                      11 And they have "Conquered him" by the "Blood" of the "Lamb"  and by the "Word" of their "Testimony", for they loved not their lives even unto death.

 12 Therefore, "Rejoice, O Heavens and you who dwell in them!" But Woe to you, O "Earth and Sea, for the,   "Devil" has come down to you in "Great Wrath", because he knows that his time is "short!"
1 Thess 4:15-18   15 For this we declare to you by a word from the Lord, that we who are alive, who are left until the coming of the Lord, will not precede those who have fallen asleep. 16 For the Lord himself will descend from heaven with a cry of command, with the voice of an archangel, and with the sound of the trumpet of God. And the dead in Christ will rise first. 17 Then we who are alive, who are left, will be caught up together with them in the clouds to meet the Lord in the air, and so we will always be with the Lord. 18 Therefore encourage one another with these words. 
Phil 3:7-14   7 But everything that was a gain to me, I have considered to be a loss because of Christ. 8 More than that, I also consider everything to be a loss in view of the surpassing value of knowing Christ Jesus my Lord. Because of Him I have suffered the loss of all things and consider them filth, so that I may gain Christ 9 and be found in Him, not having a righteousness of my own from the law, but one that is through faith in Christ—the righteousness from God based on faith. 10 My goal is to know Him and the power of His resurrection and the fellowship of His sufferings, being conformed to His death, 11 assuming that I will somehow reach the resurrection from among the dead.

Reaching Forward to God's Goal

12 Not that I have already reached the goal or am already fully mature, but I make every effort to take hold of it because I also have been taken hold of by Christ Jesus. 13 Brothers, I do not consider myself to have taken hold of it. But one thing I do: forgetting what is behind and reaching forward to what is ahead, 14 I pursue as my goal the prize promised by God's heavenly call in Christ Jesus.
Olivet Discourse Similarities to Revelation Account :
                 1 John 3:2-3   2 Beloved, now we are 
        children of God; and it has not yet been re-
vealed what we shall be, but we know that when 
He is revealed, we shall be like Him, for we shall 
see Him as He is. 3 And everyone who has this 
hope in Him purifies himself, just as He is pure. 
The REVELATION of 
  "JESUS  CHRIST"
       Coming on the 
  CLOUDS of HEAVEN with
POWER and GREAT GLORY.    And HE will send out the
Angels & Gather HIS Elect   from the four Winds ...

RAPTURE "SOUNDS":  1 Thes 4:16-17  
1 "SHOUT":  for "Dead in Christ" to 'Come Forth' see Jn 11:43
2 Archangel's Jude 1:9, Dn 12:1 "VOICE":  for Angels to get ready .. 
3 God's "TRUMPET Announcement":  for the Angels to bring "His" Bride to "Him"!
Gal 4:21-27

21 Tell me, you who desire to be under the law, do you not listen to the law? 22 For it is written that Abraham had two sons, one by a slave woman and one by a free woman. 23 But the son of the slave was born according to the flesh, while the son of the free woman was born through promise. 24 Now this may be interpreted allegorically: these women are two covenants. One is from Mount Sinai, bearing children for slavery; she is Hagar. 25 Now Hagar is Mount Sinai in Arabia; she corresponds to the present Jerusalem, for she is in slavery with her children. 26 But the Jerusalem above is free, and she is our mother. 27 For it is written,

 "Rejoice, O barren one who does not bear;
break forth and cry aloud, you who are not in labor!
For the children of the desolate one will be more
than those of the one who has a husband."
2 Cor 4:14-18
14 knowing that "He" who "Raised" the "Lord Jesus" will "raise us" also with "Jesus" and bring "us" with "you" into "His" "Presence". 15 For it is "All for "your" Sake", so that as "Grace" extends to "More and More People'" it may "Increase "Thanksgiving", "To the Glory" of "God".

16 So "we" Do Not "lose heart". Though our 'outer nature' is 'wasting away', our "Inner Nature" is being "Renewed" "Day by Day'. 17 For this 'slight momentary affliction' is "Preparing" for us an "Eternal Weigh"t of "Glory" "Beyond "All" Comparison", 18 as we look Not To the 'things' that are 'seen' but to the "Things" that are "Unseen".  For the 'things that are seen' are 'transient', but the "Things that are Unseen" are "Eternal". 
Matt 16:1-4
1 And the Pharisees and Sadducees came, & to test him they asked him to show them a sign from heaven. 
2 He answered them, "When it is evening, you say, 'It will be fair weather, for the sky is red.'  
3 And in the morning, 'It will be stormy today, for the sky is red and threatening.' You know how to interpret the appearance of the sky, but you cannot interpret the signs of the times.  
4 An evil and adulterous generation seeks for a sign, but no sign will be given to it except the sign of Jonah."