Psalms 106:32-33

They angered him also at the waters of strife Of which see Numbers 20:3. It went ill with Moses for their sakes Or, because of them, upon occasion of their unbelief and murmuring, whereby he was provoked to speak unadvisedly, as it here follows. For though he was the meekest of all the men on the earth, yet their clamours at that time were so peevish and provoking, that his spirit was exasperated and imbittered, and he spake in a manner that did not become him; for he said, in anger, Hear now, ye rebels; must we fetch water out of this rock for you? He did not show that affiance in God, and that disposition to glorify him before his people, which became him in the execution of his office. This was Moses's infirmity, and it is written for our admonition, that we may learn, when we are in the midst of provocation, to keep our mouths as with a bridle, and to take heed to our spirits, that they admit not resentments too much; for, when the spirit is provoked, it is not easy even for those that have a great deal of wisdom and grace to avoid speaking unadvisedly.