'Fire and brimstone' which means 'fearful penalties'. Brimstone means sulphur which burns in flames. It is mythically believed that the hell is made of sulphurs. In hell, great fires devour the souls of the sinners, and the phrase fire and brimstone actually refers to hellish punishments.
The USA has threatened Iraq with fire and brimstone if she refuses to follow the resolutions of UNO.
Husband warned his wife about her attitude with fire and brimstone.
The teacher in his first class asked students to adhere to his words with fire and brimstone.