נָחַ֣ר מַפֻּ֔חַ מאשתם [מֵאֵ֖שׁ] [תַּ֣ם] עֹפָ֑רֶת לַשָּׁוְא֙ צָרַ֣ף צָר֔וֹף וְרָעִ֖ים לֹ֥א נִתָּֽקוּ׃
風箱被火燒焦，鉛也被火燒盡；煉銀的人徒然熬煉，因為惡人仍未被除去。
Rashi
The bellows is heated This is an allegory. When they refine silver, they blow with a bellows, and they always put lead into the crucible, which helps for the refining. But you—I have come to refine you. The bellows is heated and parched because of the fire, and the lead is completely consumed. נחר is an expression related to (Job 42:7) “My wrath has been kindled (חרה)”; (ibid. 30:30) “And my bones are burned (חרה) with heat,” (esrast in O.F.).
Rashi
and the wicked ones have not been separated from their evil way. That is to say that the prophets toiled to reprove, but it did not avail them.
Rashi
Separated Heb. נתקו, (furent de... in O.F.). (Another version:) and the wicked ones. This is like רשעים.