Bamidbar 21:5-6

Orthodox Jewish Bible

⁵ And the people spoke against Elohim, and against Moshe, Why have ye brought us up out of Mitzrayim to die in the midbar? For there is no lechem, neither is there any mayim; and our nefesh loatheth this wretched lechem.

⁶ And Hashem sent fiery nechashim among the people, and they bit the people; and Am rav miYisroel died.