Death: root of prophecy

When Eldad and Meidad prophecy in the camp ( Numbers 11:27 וַיָּרָץ הַנַּעַר וַיַּגֵּד לְמֹשֶׁה וַיֹּאמַר אֶלְדָּד וּמֵידָד מִתְנַבְּאִים בַּמַּחֲנֶה. כח וַיַּעַן יְהוֹשֻׁעַ בִּן-נוּן מְשָׁרֵת מֹשֶׁה מִבְּחֻרָיו וַיֹּאמַר אֲדֹנִי מֹשֶׁה כְּלָאֵם.) Chazal say that their prophecy was that Moshe would die. The prediction that a person will die is an excellent bet and thus it is likely to come true, a true prophecy.

But the thought a person dying changes your relationship with that person. It also changes your perspective about yourself. Thus, it contains a moral lesson, which is another requisite component of prophecy, the quality that separates proephecy from prediction.