But this baffled quest cannot be the end. If Jehovah seeks in vain for goodness on earth, earth cannot go on for ever in godless riot. Therefore, with eloquent abruptness, the voice from heaven crashes in upon the "fools" in the full career of their folly. The thunder rolls from a clear sky. God speaks in ver. 4. The three clauses of the Divine rebuke roughly correspond with those of ver. 1 in so far as the first points to ignorance as the root of wrong-doing, the second charges positive sin, and the third refers to negative evil. "Have all the workers of iniquity no knowledge?" The question has almost a tone of surprise, as if even Omniscience found matter of wonder in men's mysterious love of evil. Jesus "marvelled" at some men's "unbelief"; and certainly sin is the most inexplicable thing in the world, and might almost astonish God as well as heaven and earth. The meaning of the word "know" here is best learned from ver. 1. "Not to know" is the same thing as to be "a fool." That ignorance, which is moral perversity as well as intellectual blindness, needs not to have a special object stated. Its thick veil hides all real knowledge of God, duty, and consequences from men. It makes evil-doing possible. If the evil-doer could have flashed before him the realities of things, his hand would stay its crime. It is not true that all sin can be resolved into ignorance, but it is true that criminal ignorance is necessary to make sin possible. A bull shuts its eyes when it charges. Men who do wrong are blind in one eye at least, for, if they saw at the moment what they probably know well enough, sin would be impossible. This explanation of the words seems more congruous with ver. 1 than that of others, "made to know," _i.e._ by experience to rue. Ver. 4 _b_ is obscure from its compressed brevity "Eating my people, they eat bread." The A.V. and R.V. take their introduction of the "as" of comparison from the old translations. The Hebrew has no term of comparison, but it is not unusual to omit the formal term in rapid and emotional speech, and the picture of the appetite with which a hungry man devours his food may well stand for the relish with which the oppressors swallowed up the innocent. There seems no need for the ingenuities which have been applied to the interpretation of the clause, nor for departing, with Cheyne, from the division of the verse according to the accents. The positive sins of the oppressors, of which we have heard so much in the connected psalms, are here concentrated in their cruel plundering of "my people," by which the whole strain of the psalm leads us to understand the devout kernel of Israel, in contrast with the mass of "men of the earth" in the nation, and not the nation as a whole in contrast with heathen enemies.