How much more abominable and filthy is man - How much more than the angels, and than the heavens. In Job 4:19, the image is somewhat different. There it is, how can man be the object of the divine confidence since he lives in a house of clay, and is so frail? Here the image is more striking and forcible. The word rendered filthy (אלח 'âlach) means, in Arabic, to be sour, as milk, and then to be corrupt, in a moral sense; Psalm 14:3; Psalm 53:4. Here it means that man is defiled and polluted, and this declaration is a remarkable illustration of the ancient belief of the depravity of man.
Which drinketh iniquity like water - This is still a true, though a melancholy account of man. He loves sin, and is as greedy of it as a thirsty man is of water. He practices it as if it were his very nature - as much so as it is to drink. Perhaps too there may be an allusion, as Dr. Good supposes, to the large draught of water which the camel makes, implying that man is exceedingly greedy of iniquity; compare Job 20:12; Job 34:7; Proverbs 19:28.

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.

How much more abominable and filthy [is] man, which (k) drinketh iniquity like water?
(k) Who has a desire to sin, as he who is thirsty to drink.

How much more abominable and filthy is man,.... In his natural, corrupt, and unregenerate estate; man, as a creature, was not abominable, but becoming sinful he is; he is so in himself, cast out to the loathing of his person, being full of wounds, bruises, and putrefying sores, yea, like a dead corrupted carcass, for he is dead in trespasses and sins, Ephesians 2:1; and he appears to be corrupt by the abominable works done by him, as all the works of the flesh are; yea, he is abominable to himself, when made sensible of his state and case; he then abhors himself, and repents of his sins, he loathes his sins, and himself for them; and must be much more so in the sight of God, who is of purer eyes than to behold iniquity, as man is nothing else than a mass of sin, and therefore must be "filthy"; for sin is of a defiling nature, it defiles the body and all its members, and the soul with all its powers and faculties: man is naturally and originally filthy, being conceived in sin, and shapen in iniquity; nor can a clean thing be brought out of an unclean; he is internally and universally unclean, his heart is a sink of sin, desperately wicked, and wickedness itself; his mind and conscience are defiled, and there is no place clean; and this appears outwardly in his actions, in his life and conversation, which is filthy also: for if the ploughing of the wicked is sin, and the righteousnesses of men are filthy rags, how impure must the immoral actions of wicked men be? man is so impure, that nothing but the blood of Christ can purify his heart, and purge his conscience from dead works, and make white his outward conversation garment:
which drinketh iniquity like water; it is as natural to him to commit iniquity as it is for a man to drink water when he is thirsty, and he does it with equal gust, delight, and pleasure; as cold water is delightful to a thirsty soul, so is sin to a sinner, a sweet morsel he holds in his mouth; various lusts are various pleasures, though these pleasures are but for a season: sin, like water, is easy to be come at, it is near at hand, it easily besets men, and is all around them, and they easily give into it; everyone turns to his wicked course as readily as the horse rushes into the battle; and the phrase may be expressive of the abundance of sin committed, like large draughts of water greedily taken down by a man athirst, and repeated again and again; moreover, as water drank enters into men, and is taken down as an harmless thing, yet often proves very hurtful and pernicious to them when drank while they are hot, and occasions disorders, which issue in death; so sin, though it may seem harmless, and be pleasing and refreshing, going down like water, yet it works like poison, and is the gall of asps within a man, and ends in eternal death, if grace prevents not. This is the conclusion and application of the whole to man, arguing from the greater to the lesser, and so proving the impurity and imperfection of man, and that he cannot be clean and righteous before God of himself.

filthy--in Arabic "sour" (Psalm 14:3; Psalm 53:3), corrupted from his original purity.
drinketh-- (Proverbs 19:28).

Who - Who besides his natural proneness to sin, has contracted habits of sinning; and sins as freely, as greedily and delightfully, as men, especially in those hot countries, drink up water.