Watchtower 2001 Aug 1 p.14 par. 8
"(A mature christian) does not advocate or insist on personal opinions or harbor private ideas when it comes to Bible understanding. Rather, he has complete confidence in the truth as it is revealed by Jehovah God through his Son, Jesus Christ, and "the faithful and discreet slave."
Watchtower 1994 Oct 1 p. 8 last par.
"All who want to understand the Bible should appreciate that the "greatly diversified wisdom of God" can become known only through Jehovah's channel of communication, the faithful and discreet slave"