Numbers 20:10

ויקהלו וגו׳ [AND MOSES AND AARON] ASSEMBLED [THE WHOLE CONGREGATION BEFORE THE ROCK] — This was one of the places where the smaller contained the greater, (the entire congregation being assembled in front of one rock) (Leviticus Rabbah 10:9). המן הסלע הזה נוציא MUST WE BRING [WATER] OUT OF THIS ROCK? — They said this because they could not distinguish it (the rock intended by God), for the rock from which the water had hitherto flowed during these forty years had vanished and taken a place amongst the other rocks when the “well” disappeared after Miriam’s death, and Israel said to them, “What difference is it to you from which rock you bring forth water for us?” — It was on this account that he (Moses) said unto them (called them) המרים — which may mean “refractory”, or, as a Greek expression, “foolish people” (µώροι), or, “such as would teach (מורים) their teachers” — from this rock about which we have received no Divine Command can we bring forth water for you?! (cf. Midrash Tanchuma, Chukat 9).

וַיַּקְהִ֜לוּ מֹשֶׁ֧ה וְאַהֲרֹ֛ן אֶת־הַקָּהָ֖ל אֶל־פְּנֵ֣י הַסָּ֑לַע וַיֹּ֣אמֶר לָהֶ֗ם שִׁמְעוּ־נָא֙ הַמֹּרִ֔ים הֲמִן־הַסֶּ֣לַע הַזֶּ֔ה נוֹצִ֥יא לָכֶ֖ם מָֽיִם׃

And Moshe and Aharon gathered the congregation together before the rock, and he said to them, Hear now, you rebels; shall we fetch you water out of this rock?