Their gain :
The deep inner sensation of pure satisfaction and bliss knowing they have accomplished to their utmost ability the Lord’s divine purpose for the chosen representatives of his Faithful and Discreet Slave class while on earth
« Well done, faithful and true slave. »
There is no greater reward that to receive the adorning crown and glory of immortality and incorruptibility and to reign over humankind alongside the King of Kings
In my opinion : some pretty lucky (whoops, sorry, I meant fortunate) « humble » Kings-In-Waiting who, I assure you, aren’t suffering while « slaving » for the Master
My experience : take someone with supposedly noble motives and goals ... give him a position of direction with perks ... he invariably becomes a less noble person.
Seen it hundreds of times inside the org. as well as out. Guess its human nature.