Augustine of Hippo

"And they angered Him at the waters of strife: so that Moses was vexed for their sakes" (ver. 32); "because they provoked his spirit, so that he spake doubtfully with his lips" (ver. 33). What is spake doubtfully? As if God, who had done so great wonders before, could not cause water to flow from a rock. For he touched the rock with his rod with doubt, and thus distinguished this miracle from the rest, in which he had not doubted. He thus offended, thus deserved to hear that he should die, without entering into the land of promise. …

Exposition on Psalm 106 ↗