TEN slaves were sent out to do business. All but one gained increase. The coin givin to the sluggish slave who buried the money was given to the slave that had a 10-fold increase! Meaning the WTS is not the only organization being used to Christ to gather his elect. It means the WTS only produces the "little flock" which is separated out from the WTS and brought to "other sheep not of his fold."
So the idea that the WTS is the only place where there is a flock is non-scriptural and inaccurate. The WTS is now that evil slave organization which has a low production which then is taken away and given to the largest organization of Christ's followers.