Adam Clarke on Numbers 14:1

Cried; and - wept that night - In almost every case this people gave deplorable evidence of the degraded state of their minds. With scarcely any mental firmness, and with almost no religion, they could bear no reverses, and were ever at their wit's end. They were headstrong, presumptuous, pusillanimous, indecisive, and fickle. And because they were such, therefore the power and wisdom of God appeared the more conspicuously in the whole of their history.