כְּהִתּ֥וּךְ כֶּ֙סֶף֙ בְּת֣וֹךְ כּ֔וּר כֵּ֖ן תֻּתְּכ֣וּ בְתוֹכָ֑הּ וִֽידַעְתֶּם֙ כִּֽי־אֲנִ֣י יְהוָ֔ה שָׁפַ֥כְתִּי חֲמָתִ֖י עֲלֵיכֶֽם׃ (פ)
As silver is melted in the midst of the furnace, so shall ye be melted in the midst thereof; and ye shall know that I the LORD have poured out My fury upon you.’
Read midrashic interpretation of Ezekiel 22:22: and classical rabbinic exegesis.