וְנָתַתִּ֤י אֶת־פָּנַי֙ בָּהֶ֔ם מֵהָאֵ֣שׁ יָצָ֔אוּ וְהָאֵ֖שׁ תֹּֽאכְלֵ֑ם וִֽידַעְתֶּם֙ כִּֽי־אֲנִ֣י יְהוָ֔ה בְּשׂוּמִ֥י אֶת־פָּנַ֖י בָּהֶֽם׃
Rashi on Ezekiel
From the fire they have emerged They transgressed the words of the Torah, which were given from fire, and nations as strong as fire will destroy them.