כִּי־נָט֣וּ עָלֶ֣יךָ רָעָ֑ה חָֽשְׁב֥וּ מְ֝זִמָּ֗ה בַּל־יוּכָֽלוּ׃
For they intended evil against thee, They imagined a device, wherewith they shall not prevail.
Read kabbalistic (mystical) interpretation of Psalms 21:12: and classical mystical sources.