Hello Reniaa,
now putting a date on current bible prophecy isn't prophecy but this scriptures allows prophecy in part which in my opinion is probably in relation to dealing with intepreting bible prophecies due to happen that are written so we know when they do come to fulfillment.
but whatever it mean this scripture shows the main gifts dispear which history itself testifies too but that knowing in part and prophecying in part do remain whatever we think on that.
So are you claiming that the WT is not God's prophet on the earth and doesn't prophesy?
What are they doing when they say that Thurday's off is a "gift from Jehovah" for example?
All the best,
Stephen