Witness Lurkers,
I have a suggestion: Take these questions, tell your elders that an inactive Witness asked them (truth), and you want to get together the Scriptural support for them so you can help this person regain confidence.
Anyone can try. So far, Shadow is the only one who holds out a hope of a Scriptural answer.
Since these are "foundational doctrines" why are they not addressed in What Does the Bible Really Teach? The term "Faithful and Discreet Slave" does not appear in the publication, there is no mention that this "Slave" is a class of people; in fact, there is no mention of any requirement to submit to any authority except Jehovah and Jesus. There is also no mention that there is a corporate filter between the student and God when it comes to acquiring clear understanding of Scripture.
I suppose there is time enough for them to be indoctrinated on those "truths" from gods', i.e. the Governing Body's, Holey Word the Watchtower after they answer yes to the public verbal contract binding them to that corporation.
In worldly terms, this kind of immoral scam is called "Bait and Switch."
On page 146 of What Does the Bible Really Teach?, the opening sentence of paragraph 6 purports to represent one criteria for determining the true religion. It reads: "God's servants base their teachings on the Bible."
Do you do this, Witnesses? Do you base your teachings on the Bible? Or do you find some false premise (e.g. the success of the worldwide preaching work, etc.) to use in dismissing the necessity of this in your case?
Curiously,
OldSoul