Isaiah 1:25

I will turn my hand upon thee, to chastise thee again, which God threatened that he would not do, Isaiah 1:5, but now promiseth that he will do it, not in fury, or so as utterly to destroy them, but in mercy, and with moderation, so as to purge them, as it here follows. And purely purge away thy dross, and take away all thy tin; I will purge out of thee and destroy those wicked men that are incorrigible and infectious to others; and for those of you that are curable, I will by my word, and by the furnace of affliction, purge out all that hypocrisy and corruption that yet remains in you, and requires so sharp a cure.