Ellicott has some good points, and others can be contended with. But I would like to, within the context of the OP, comment of your statement above. I do not say it is correct or incorrect, but it is worth some consideration. The Christians that are alive at the dawn of the Great Tribulation are divided into two groups - (i) The Overcomers, and (ii) The "remainder" - 'who have the testimony of Jesus Christ', but who remain on earth (Rev.12:17). I have dealt with the "Overcomers" in my posting # 2. Let us consider those who remain.
In at least four places in Revelation we have believers on earth during the Beast's reign.
- In Revelation 12:17, as mentioned above, we have a "remainder" of men and women who (i) have the testimony of Jesus Christ, but are not "caught away" to the throne and who must flee to a wilderness for the duration of the Great Tribulation
- In Revelation 7:9-17 we have a Company of mankind who are obviously attached to Jesus Christ. But their garments were dirty and had to be washed. It says clearly in verse 14 that they came through, or out of, the Great Tribulation
- In Revelation 13:7 we find that, as Daniel predicted, the Beast makes war with the saints and overcomes them. This could not happen if they, like the overcomers, were in the clouds away from the earth - the sphere of the Beast's power
- In Revelation 18 we are presented with the Commercial Babylon - the world trade system at the end of the age. In verse 4 we discover that "God's People" are in it. The call is that they should leave immediately. But it would seem from the tense of verse 2 that the Great Babylon's destruction is accomplished. This would be at the end of the Great Tribulation as Chapter 13 shows a Mark issued by which a man can trade. That is, at the issue of the Mark would occur at the beginning of the 42 months and Babylon the Great would function during this time - with "My people" in it.
Added to this, the verses concerning the Overcomers in my posting # 2 IMPLY that not ALL will be found worthy, and the letters to the seven Churches in Revelation 2 to 3 confirm this. So this is what is worth considering.
If Christians "are doomed" to pass through the Great Tribulation, on what basis will their children be treated differently? And if the person in Judaeah who sees the Abomination of Desolation obeys the Lord and flees forthwith, why would it be a "woe" if one had a baby with? (Matt.24:19). Are children going to be safe when the severity of the Great Tribulation is applied to their parents? Were the children of Abraham safe at Moses' time from Pharaoh? Or were the children of Bethlehem under two years safe? Or were the children of Christians throughout the last 1,900 years safe during the most vicious of persecutions like Nero's, or the Inquisition?