Great tribulation that the saints went through is the trouble they received from the world. In the words of Jesus:
33 These things I have spoken unto you, that in me ye might have
peace. In the world ye shall have tribulation: but be of good cheer; I
have overcome the world.
There is a difference between the tribulation the saints are currently enduring from the world and the tribulation that the world is going to be recompensed by God:
2 Thessalonians 1:4-10
4 So that we ourselves glory in you in the churches of God for your
patience and faith in all your persecutions and tribulations that ye
5 Which is a manifest token of the righteous judgment of God, that ye
may be counted worthy of the kingdom of God, for which ye also suffer:
6 Seeing it is a righteous thing with God to recompense tribulation to
them that trouble you;
7 And to you who are troubled rest with us, when the Lord Jesus shall
be revealed from heaven with his mighty angels,
8 In flaming fire taking vengeance on them that know not God, and that
obey not the gospel of our Lord Jesus Christ:
9 Who shall be punished with everlasting destruction from the presence
of the Lord, and from the glory of his power;
10 When he shall come to be glorified in his saints, and to be admired
in all them that believe (because our testimony among you was
believed) in that day.
The tribulation that God is going to recompense the world is the wrath of the lamb after the end of the period of Grace. Before that tribulation the saints will be taken off the scene for God to punish the world for their inequities.
19 Thy dead men shall live, together with my dead body shall they
arise. Awake and sing, ye that dwell in dust: for thy dew is as the
dew of herbs, and the earth shall cast out the dead.
20 Come, my people, enter thou into thy chambers, and shut thy doors
about thee: hide thyself as it were for a little moment, until the
indignation be overpast.
21 For, behold, the LORD cometh out of his place to punish the
inhabitants of the earth for their iniquity: the earth also shall
disclose her blood, and shall no more cover her slain.
This tribulation is the wrath of the lamb, the opening and manifestation of the sixth seal.
12 And I beheld when he had opened the sixth seal, and, lo, there was
a great earthquake; and the sun became black as sackcloth of hair, and
the moon became as blood;
13 And the stars of heaven fell unto the earth, even as a fig tree
casteth her untimely figs, when she is shaken of a mighty wind.
14 And the heaven departed as a scroll when it is rolled together; and
every mountain and island were moved out of their places.
15 And the kings of the earth, and the great men, and the rich men,
and the chief captains, and the mighty men, and every bondman, and
every free man, hid themselves in the dens and in the rocks of the
16 And said to the mountains and rocks, Fall on us, and hide us from
the face of him that sitteth on the throne, and from the wrath of the
17 For the great day of his wrath is come; and who shall be able to
The true blood washed saints will not pass through this tribulation of the wrath of the lamb.
26 And as it was in the days of Noe, so shall it be also in the days
of the Son of man.
27 They did eat, they drank, they married wives, they were given in
marriage, until the day that Noe entered into the ark, and the flood
came, and destroyed them all.
28 Likewise also as it was in the days of Lot; they did eat, they
drank, they bought, they sold, they planted, they builded;
29 But the same day that Lot went out of Sodom it rained fire and
brimstone from heaven, and destroyed them all.
30 Even thus shall it be in the day when the Son of man is revealed.
The saints of revelation 7:14 who were before the throne are the raptured saints. At this time God deals with Israel and seals the
144000. This chapter during the sixth seals, two scenes come in preview, earth where the 144000 are being sealed, God dealing with the Jews. The second scene is heaven where blood the saints of all ages are gathered before the throne.