TD: "The JW faith bases their salvific model on Revelation 7 where there are two and only two groups.
My reading gives 3 groups with wt explanation,
1) The 12 tribes of Israel, those with an earthly hope.
2) the 144k sealed out of those tribes (the sealed, anointed heavenly class since Pentecost/ Stephen.)
3) the great Crowd, that is saved, that comes out of the Great tribulation. fits the description of Rev 21 : "wiped every tear from their eyes--"
I thought you had in mind another 3rd group that wt implied to exist in the middle ages.