As a reminder "channel" is not a Biblical term and is more commonly found in connection with occult and spiritualistic mediums.
November 15 2009 Watchtower (Study Edition) - Treasure Your Place in the Congregation...
w58 7/15 p.440 par.2 Beware that You Do Not Lose Your Place!
So, to keep your place faithfully, do not follow the wicked course of Satan the Devil. He let iniquity, that is, lawlessness and rebellion against Jehovah’s organization, take root in his heart. Do not openly or secretly challenge Jehovah’s channel of communication, as Korah, Dathan and Abiram did, lest the earth swallow you up and you lose your place among those who will live in the new world