The WTS believes that "prophesying" is preaching and teaching, not predicting the future.
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PROPHESYING TODAY
Since Joel 2:28, which has its complete fulfillment after 1919, foretells that God will pour out his spirit upon people of all kinds and "your sons and your daughters shall prophesy, your old men shall dream dreams, your young men shall see visions", in what sense then do Jehovah's witnesses prophesy today? Jehovah's people confess no powers of inspiration today. However, they do pray continually for more of God's holy spirit to understand the many prophecies already uttered and preserved for the final preaching work which Jehovah's witnesses are now undertaking. They know that the inspired infallible Scriptures of prophecy will be fulfilled toward them correctly. They diligently study the visions and dreams of God's faithful men of old. They can quote and copy the Scriptures of God's inspired men and can apply them according to the facts. They can observe how God interprets them by Christ Jesus through the events and facts that he causes to appear. They are then faithful in publishing and preaching the revealed prophecies to the utter ends of the earth. The twentieth-century preaching prophets of Jehovah are the ones who are running to and fro over the Bible to gain knowledge of the divine pronouncements which is on the increase.-Dan. 12:4.
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Let this fact not be overlooked: It was not the miraculous speaking with foreign tongues that Joel's prophecy on the last days foretold; it was the outpouring of God's holy spirit accompanied by prophesying. This particular prophesying was not the special gift of prophecy that was inspired, a gift that was not shared by all Christians. It was the declaration publicly of the "magnificent things of God," and this prophesying was shared by all receivers of God's outpoured spirit, from Pentecost forward.-Acts 2:5-11.
That organization for which we must look is the one that gives the proof of having God's spirit poured out upon it in these "last days" by doing the foretold prophesying, the 'preaching of this good news of God's kingdom in all the inhabited earth for a witness to all the nations.' As foretold, this preaching or prophesying is being done by every sort of flesh in the organization, by male and female, by sons and daughters, by old men and young men, by the menservants and the maidservants, by all those on whom the spirit has been poured out.
In proof of this they have got baptized in symbol of their full dedication of themselves to God and are wholeheartedly taking part with the remnant in the prophesying or preaching of the good news.-Zech. 8:20-23.
God's holy spirit when poured out upon the remnant of spiritual Israel causes or induces only the prophesying or preaching of the truth, God's own truth.
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They must do what the prophetic Scriptures foretold and what the remnant of the anointed "little flock" are doing-prophesy or preach.
It has resulted in more and more, better-qualified congregation servants, to watch over God's flock and to supervise their work of prophesying, witnessing.
The persecution that he has let come upon us for prophesying or preaching about his kingdom is not a mark of his curse or disapproval.