Active member
A mediator is defined as one who interposes between two parties at variance to
reconcile them, viz: an intercessor.

Here's a question that someone wrote in to the questions from readers section of
the April 01, 1976 issue of Watchtower magazine, asking:

"Is Jesus the mediator only for anointed Christians? (a.k.a. the 144,000)"

The answer given in the magazine is YES.

The magazine's answer is corroborated on page 1130 of the Society's publication
titled "Aid To Bible Understanding" where it says that the 144,000 are the only ones
who have the mediator; a.k.a. Jesus Christ. (1John 2:1)

Intercession for non anointed Witnesses is accomplished on the coattails of the
144,000; viz: Jesus Christ is an indirect, second party mediator for the rank and file
via their affiliation with the Watchtower Society.

It's sort of like buying insurance from Allstate. The company doesn't sell direct; its
business is conducted through brokers. In essence, that's what the Society
presumes itself: Jesus Christ's mediation brokerage.

So then; when a JW either defects or is disfellowshipped, their pipeline to the
mediator is broken, and they right quick lose all contact with God; thus placing
themselves in grave danger of the calamities depicted in the book of Revelation.

Bottom line: According to Watchtower Society theology; it is impossible for non
anointed people to be on peaceful terms with God apart from affiliation with the
Society's anointed class, a.k.a. the faithful and wise steward.

In other words: Christ's mediation for rank and file JWs as per 1Tim 2:5 is
accomplished via a chain of communication that begins with Christ's association
with the faithful and wise steward; and from thence to the rest of humanity.
Removing the faithful and wise steward from the chain cuts humanity off from
Christ; thus leaving them with no way to reconcile with God.

NOTE: I've had JWs tell me that the Watchtower magazine isn't their authority in
matters of faith and practice. But the Jan 1, 1942 issue of the magazine, on page 5,
speaks for itself as a trustworthy source of Watchtower Society theology by saying:

"Those who are convinced that The Watchtower is publishing the opinion or
expression of a man should not waste time in looking at it at all. Those who believe
that God uses the Watchtower as a means of communicating to his people, or of
calling attention to his prophecies, should study The Watchtower.

In other words: the haulers of water and the hewers of wood-- John Q and Jane
Doe rank and file --are not only expected to know what's in the Watchtower
magazine, but they're also required to accept it as the God's truth.