וְיָדְע֖וּ כִּֽי־אֲנִ֣י יְהוָ֑ה לֹ֤א אֶל־חִנָּם֙ דִּבַּ֔רְתִּי לַעֲשׂ֥וֹת לָהֶ֖ם הָרָעָ֥ה הַזֹּֽאת׃ (פ)
And they shall know that I am the LORD; I have not said in vain that I would do this evil unto them.
Read midrashic interpretation of Ezekiel 6:10: and classical rabbinic exegesis.