A question without going into details
If you had evidence from the Quran and Sunnah that there is a very important religious belief that has been deeply rooted in the minds of Muslims for centuries, that one day in the future it will cause severe strife, and that it is linked to the strife associated with the major signs of the end of time, and you know that many Muslims will be led astray because of the inheritance of this belief.
Should you announce it to the people now, even though it has no effect at the present time, or should you leave it for a future time, as it is possible that the time for this tribulation has not yet come?