ה֖וֹי חֲכָמִ֣ים בְּעֵֽינֵיהֶ֑ם וְנֶ֥גֶד פְּנֵיהֶ֖ם נְבֹנִֽים׃
Woe unto them that are wise in their own eyes, And prudent in their own sight!
Read Kabbalistic (mystical) interpretations of Isaiah 5:21: Zohar and classical Jewish mystical sources, free online.