Jamieson, Fausset & Brown

[Moses] said unto them, Hear now, ye rebels; must we fetch you water out of this rock?--The conduct of the great leader on this occasion was hasty and passionate (Psa 106:33). He had been directed to speak to the rock [Num 20:8], but he smote it twice [Num 20:11] in his impetuosity, thus endangering the blossoms of the rod, and, instead of speaking to the rock, he spoke to the people in a fury.