לַשָּׁוְא֙ הִכֵּ֣יתִי אֶת־בְּנֵיכֶ֔ם מוּסָ֖ר לֹ֣א לָקָ֑חוּ אָכְלָ֧ה חַרְבְּכֶ֛ם נְבִֽיאֵיכֶ֖ם כְּאַרְיֵ֥ה מַשְׁחִֽית׃
In vain have I smitten your children— They received no correction; Your sword hath devoured your prophets, Like a destroying lion.
Read kabbalistic (mystical) interpretation of Jeremiah 2:30: and classical mystical sources.