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׃
以及祂向流便的孫子、以利押的兒子大坍和亞比蘭所行的：地在以色列眾人當中張開了口，把他們和他們的家眷、帳棚，以及他們賴以立足的一切財物都吞了下去；
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.