אֶת־מִי֙ יוֹרֶ֣ה דֵעָ֔ה וְאֶת־מִ֖י יָבִ֣ין שְׁמוּעָ֑ה גְּמוּלֵי֙ מֵֽחָלָ֔ב עַתִּיקֵ֖י מִשָּׁדָֽיִם׃
Wem soll man jetzt Einsicht beibringen, wen Kunde lehren? Nur noch der Milch Entwöhnte, der Brust Entnommene [die unverdorbenen Kinder].
Rashi on Isaiah
Whom shall he teach knowledge Perhaps to babes who know not to understand, since the adults have turned to an evil way?
Ibn Ezra on Isaiah
Whom shall he teach knowledge, etc. When the prophet is about to reprove them, no one understands him; for because of the wine they have not their reason; they are like little children.