[Thou art] of purer eyes than to behold evil, and canst not look upon iniquity,.... The Lord with his eyes of omniscience beholds all things good and evil, and all men good and bad, with all their actions; but then he does not look upon the sins of men with pleasure and approbation; since they are contrary to his nature, repugnant to his will, and breaches of his righteous law: and though sin in general may be included here, yet there seems to be a particular respect had to the "evil" or injury done by the Chaldeans to the Jews, in invading their land, spoiling their substance, and slaying their persons; and to the "iniquity", labour, or grievance, by which may be meant the oppression and violence the same people exercised upon the inhabitants of Judea; which, though permitted by the Lord, could not be well pleasing in his sight.
The Targum interprets it of persons, workers of evil, and workers of the labour of falsehood; see Ps 5:4:wherefore lookest thou upon them that deal treacherously; the Chaldeans, who dealt treacherously with God, by worshipping idols; and with the Jews, pretending to be their good friends and allies, when they meditated their ruin and destruction; and yet the Lord in his providence seemed to look favourably on these perfidious persons, since they succeeded in all their enterprises: this was stumbling to the prophet, and all good men; and they knew not how, or at least found great difficulty, to reconcile this to the purity and holiness of God, and to his justice and faithfulness; see Jer 12:1:and holdest thy tongue when the wicked devoureth [the man that is] more righteous than he?