Adam Clarke on Job 15:16

How much more abominable and filthy is man - As in the preceding verse it is said, he putteth no trust in his saints, it has appeared both to translators and commentators that the original words, אף כי aph ki, should be rendered how much Less, not how much More: How much less would he put confidence in man, who is filthy and abominable in his natures and profligate in his practice, as he drinks down iniquity like water? A man who is under the power of sinful propensities commits sin as greedily as the thirsty man or camel drinks down water. He thinks he can never have enough. This is a finished character of a Bad man; he hungers and thirsts after Sin: on the contrary, the Good man hungers and thirsts after Righteousness.