וַאֲשֶׁ֨ר עָשָׂ֜ה לְדָתָ֣ן וְלַאֲבִירָ֗ם בְּנֵ֣י אֱלִיאָב֮ בֶּן־רְאוּבֵן֒ אֲשֶׁ֨ר פָּצְתָ֤ה הָאָ֙רֶץ֙ אֶת־פִּ֔יהָ וַתִּבְלָעֵ֥ם וְאֶת־בָּתֵּיהֶ֖ם וְאֶת־אָהֳלֵיהֶ֑ם וְאֵ֤ת כָּל־הַיְקוּם֙ אֲשֶׁ֣ר בְּרַגְלֵיהֶ֔ם בְּקֶ֖רֶב כָּל־יִשְׂרָאֵֽל׃
dan apa yang dilakukan-Nya terhadap Datan dan Abiram, anak-anak Eliab bin Ruben, bagaimana bumi membuka mulutnya dan menelan mereka beserta seisi rumah mereka, kemah-kemah mereka, dan segala harta benda yang menopang hidup mereka, di tengah-tengah seluruh Israel;
Shemirat HaLashon
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.