כִּ֤י מְשׁוּבַ֣ת פְּתָיִ֣ם תַּֽהַרְגֵ֑ם וְשַׁלְוַ֖ת כְּסִילִ֣ים תְּאַבְּדֵֽם׃
For the waywardness of the thoughtless shall slay them, and the confidence of fools shall destroy them.
Read kabbalistic (mystical) interpretation of Proverbs 1:32: and classical mystical sources.