Shemot 17:5-7

Orthodox Jewish Bible

⁵ And Hashem said unto Moshe, Go on ahead of HaAm, and take with thee Ziknei Yisroel; and thy matteh (staff) wherewith thou struck the Nile, take in thine yad, and go.

⁶ Hineni, I will stand before thee there upon the tzur in Chorev; thou shalt strike the tzur, and there shall come mayim out of it, that HaAm may drink. Moshe did so in the sight of the Ziknei Yisroel.

⁷ And he called the shem of the place Massah (Testing), and Merivah (Dissatisfaction), because of the riv (chiding, quarreling) of the Bnei Yisroel, and because they put Hashem to the test, saying, Is Hashem among us, or not?