Shemot 17:4-6

Orthodox Jewish Bible

⁴ And Moshe cried unto Hashem, saying, What shall I do with this people? They are almost ready to stone me.

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.