Just to throw something into the mix -
Revelation chapter 7 seems to be an interlude, as it were, that answers two questions raised in chapter six:
- (Revelation 6:9-11) 9 And when he opened the fifth seal, I saw underneath the altar the souls of those slaughtered because of the word of God and because of the witness work that they used to have. 10 And they cried with a loud voice, saying: “Until when, Sovereign Lord holy and true, are you refraining from judging and avenging our blood upon those who dwell on the earth?” 11 And a white robe was given to each of them; and they were told to rest a little while longer, until the number was filled also of their fellow slaves and their brothers who were about to be killed as they also had been.
(Revelation 6:15-17) . . .And the kings of the earth and the top-ranking ones and the military commanders and the rich and the strong ones and every slave and [every] free person hid themselves in the caves and in the rock-masses of the mountains. 16 And they keep saying to the mountains and to the rock-masses: “Fall over us and hide us from the face of the One seated on the throne and from the wrath of the Lamb, 17 because the great day of their wrath has come, and who is able to stand?”
Revelation 7:1-8 answers the first question. Whether the number proves to be literal is open tio question. Either way, it has symbolism written all over it (12 apostles x 12 tribes x 1000). So, plausibly, it could be both. They show up again in Revelation 14 'standing with the Lamb on Mount Zion,' being called "firstfruits," and having a unique "song" ('story to tell'?) that no one else knows.
Also, the ones crying out for justice in 6:10 seem to have no sense of how far along the gathering of the "144,000" is. So WT's (or anyone elses) attempt to tabulate when these will be finally gathered would seem to be futile. (Which would also seperate the "144,000" idea from partaking at the Lord's Evening Meal. That was a plain command - "keep doing this." The gathering of the "144,000" would be basically unknowable. Unknowable as to whether the number was a symbolic and/or literal one. And unknowable as to when it was finished.
The great crowd of Revelation 7:9-17 is an answer to the second question - 'Who is able to stand during the day of wrath?'
(Revelation 7:13, 14) . . .And in response one of the elders said to me: “These who are dressed in the white robes, who are they and where did they come from?” 14 So right away I said to him: “My lord, you are the one that knows.” And he said to me: “These are the ones that come out of the great tribulation, and they have washed their robes and made them white in the blood of the Lamb.