Here's another WT article where the Society calls itself a prophet:
WT June 1, 1935 pg. 172
"Jehovah is the teacher of his own children, and never again shall their Teacher be pushed into a corner. To carry out his purpose Jehovah sent his beloved Son, Christ Jesus, to the temple in 1918, and caused his prophet, now the remnant, to proclaim: 'But Jehovah is in his holy temple: let all the earth keep silence before him.'"
The same paragraph continues (I had to quote this little gem-I know it has nothing to do with this thread (sorry)it was just too interesting-in light of the UN scandal)
"Any attempt to make the League of Nations, which is the abomination that maketh desolate, stand in the holy place is an open and flagrant defiance of Jehovah. The temple of Jehovah cannot be defiled, because there is nothing in common between his faithful temple class and the creature of the Devil and his organization. No one who understands God's Word, and loves and serves him, can give support to the League of Nations, because the thing is an abomination in the sight of Jehovah."
But the article does continue..."For this reason Jehovah and Christ do the teaching of God's people. The dumb idol cannot teach anything."
The dumb idol is referring to the League of Nations