Commentaire sur Isaïe 56:10

His lookouts are all blind Since he said, “Seek the Lord,” and the entire section, and they do not heed, he returns and says, Behold the prophets cry out to them ([Mss.:] to you) and announce concerning repentance, so that it will be good for them. Yet their leaders are all like blind men, and they do not see the results, like a lookout appointed to see the approaching army, to warn the people, but he is blind, unable to see whether the army is coming, and dumb, unable to warn the people, like a dog that was appointed to guard the house, but he is dumb, unable to bark. Similarly, the leaders of Israel do not warn them to repent to do good.

His watchmen are blind, etc. The false prophets in Israel are meant, who were like blind watchmen during the day, and like dumb dogs during the night, that cannot guard the house and are of no use whatever.

they lie slumbering Heb. הֹזִים. Dunash (Teshuvoth Dunash p. 24) explained: lying sound asleep, and Jonathan rendered: lying slumbering, and there is no comparable word in Scripture.