I John, who also am your brother, and companion in tribulation, and in the kingdom and patience of Jesus Christ, was in the isle that is called Patmos, for the word of God, and for the testimony of Jesus Christ. Revelation 1:9.
Seems to me in Rev 1:9 John understood himself to be (presently) in the Tribulation.
Thoughts?
John 16:33
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.
Christians of all ages have endured "tribulation" but that is not what Jesus spoke of in Matthew 24.
Matthew 24:21 For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be.
A specific time "then", a specific intensity, such as never been before. There has not been 2000 years of the type of tribulation Jesus described in Matthew 24.
22 And except those days should be shortened, there should no flesh be saved: but for the elect's sake those days shall be shortened.
Not the general suffering or "tribulation" many believers endure and have endured throughout the church age. It is something worse.
As bad as sometimes have been, there has never been a historic time of tribulation so bad that the extinction of humanity was imminent and required the intervention of Christ. Proved by the fact He has not yet returned in power and glory seen by all the tribes of the earth. Nor has He gathered His elect.
23 Then if any man shall say unto you, Lo, here is Christ, or there; believe it not.
24 For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.
25 Behold, I have told you before.
26 Wherefore if they shall say unto you, Behold, he is in the desert; go not forth: behold, he is in the secret chambers; believe it not.
27 For as the lightning cometh out of the east, and shineth even unto the west; so shall also the coming of the Son of man be.
28 For wheresoever the carcase is, there will the eagles be gathered together.
29 Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken:
30 And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory.
IMMEDIATELY after this specific tribulation which will be in our future is the coming of the Son of Man!
31 And he shall send his angels with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other.
Christ has not yet returned with power and glory, the tribes of the earth have not yet seem Him coming in the clouds of heaven. This particular tribulation period has not yet happened as described in Matthew 24.
Individual tribulation and suffering is endured by many Christians but this has nothing to do with the specific time period Jesus referred to in Matthew 24.