"More fire and brimstone" is a phrase that is often associated with passionate preaching or speaking, characterized by the use of vivid and alarming language to convey a sense of urgency or impending doom. Synonyms for this phrase include "hellfire and damnation," "fear-mongering," "apocalyptic," "doomsday," "armageddon," and "end-time." These words all suggest a sense of foreboding and urgency, with an emphasis on the consequences of one's actions. While the use of such language can be effective in motivating people, it can also lead to fear and anxiety, making it important to use it carefully and responsibly.