אַיָּם֙ אֵפ֣וֹא חֲכָמֶ֔יךָ וְיַגִּ֥ידוּ נָ֖א לָ֑ךְ וְיֵ֣דְע֔וּ מַה־יָּעַ֛ץ יְהוָ֥ה צְבָא֖וֹת עַל־מִצְרָֽיִם׃
Where are they, then, thy wise men? And let them tell thee now; And let them know what the LORD of hosts Hath purposed concerning Egypt.
Read kabbalistic (mystical) interpretation of Isaiah 19:12: and classical mystical sources.