תַּהֲר֥וּ חֲשַׁ֖שׁ תֵּ֣לְדוּ קַ֑שׁ רוּחֲכֶ֕ם אֵ֖שׁ תֹּאכַלְכֶֽם׃
Ye conceive chaff, ye shall bring forth stubble; Your breath is a fire that shall devour you.
Read kabbalistic (mystical) interpretation of Isaiah 33:11: and classical mystical sources.