terrible condition

Even the priests and prophets were perverted when Israel was backsliding and going after idols.

Is. 28:7 "But they also have erred through wine, and through strong drink are out of the way; the priest and the prophet have erred through strong drink, they are swallowed up of wine, they are out of the way through strong drink; they err in vision, they stumble in judgment."

[b]The priest and the prophet - [/b]Probably these persons are specified to denote the higher classes of society. It is probable that the prophet also designs to indicate the enormity of the sins of the nation, from the fact that those who were especially devoted to religion, and who were supposed to have immediate communication with God, were addicted to intemperance.
[b]They are swallowed up of wine - [/b]They are completely absorbed by it (see the note at Isaiah 25:7); they not only themselves indulge in its use, but they are themselves, as it were, swallowed up by it, so that their reason, and strength, and virtue are all gone - as a vessel is absorbed in a maelstrom or whirlpool.
[b]They err in vision - [/b]For the sense of the word ‹vision,‘ see the note at Isaiah 1:1. The prophet here states the effect of the use of wine and strong drink on their mental and moral powers. It was the office of the prophets to declare the will of God; probably also to explain the sense of the sacred Scriptures, and to address the people on their duty. Here the prophet says that the effect of their intemperance was that they had themselves no correct and clear views of the truth, and that they led the people into error.
[b]They stumble in judgment - [/b]There were many important subjects on which the priests sat in judgment among the Hebrews, particularly in all matters pertaining to religion. By the influence of intoxicating liquors they were disqualified for the high and holy functions of their office; and the consequence was, that the nation was corrupt, and was exposed to the heavy judgments of God.