Musar sobre Deuteronômio 11:2

And, (in my humble opinion,) it is possible to answer that Moses' saying "They will not believe me" may have led some to come to doubt his prophecy, as in the episode of Korach. [For, although in the end, the truth of his prophecy was evident to all — as it is written (Devarim 11:2): "For it is not [with] your children [that I speak now], who did not know and who did not see the chastisement of the L-rd your G-d… (6): And what He wrought against Dathan and Aviram, the son of Eliav… (9): …but with you, whose eyes have seen the entire great deed of the L-rd, that He has wrought" — still, in the beginning, he suffered sorely at the hands of Korach, Dathan, and Aviram.