If the other sheep are now preaching the good news with the anointed and aiding them, why would they ask: “Lord, when did we see you hungry and feed you, or thirsty, and give you something to drink?” (Matthew 25:37) There could be various reasons. This is a parable. By means of it, Jesus shows his deep concern for his spiritual brothers; he feels with them, suffers with them. [“What Future for the Sheep and the Goats?” The Watchtower, October 15, 1995, page 26, paragraph 12; underlining added.]
Matthew 6:2-4, New World Translation (1984)
[W]hen you go making gifts of mercy, do not blow a trumpet ahead of you, just as the hypocrites do in the synagogues and in the streets, that they may be glorified by men. Truly I say to you, They are having their reward in full. But you, when making gifts of mercy, do not let your left hand know what your right is doing, that your gifts of mercy may be in secret; then your Father who is looking on in secret will repay you.
If the Watchtower Society’s “faithful slave” class comprise Christ's "brothers" on earth, then those whom they treat as Christ's "sheep" would not be misled into a similar identity crisis, thinking they are already a “great crowd” who by their own teaching has not yet even appeared, in as much as no one has come “out of the great tribulation” (Revelation 7:14). Thus, like the Watchtower's “faithful and discreet slave[s]” whom the "great crowd" (which has not yet appeared) support, they are not who they think they are, either.—Revelation 7:9, 13-17.