"Fire-brimstone" is a phrase commonly used to describe a fierce, wrathful or vengeful force that may bring about punishment or destruction. There are multiple synonyms that can be used in place of this phrase, depending on the context. Some options include "hellfire", "conflagration", "flames of fury", "fiery damnation", "inferno", "apocalyptic fire", "incendiary wrath", "blazing retribution", "scorching vengeance" and "punishing blaze". Each of these synonyms describes a powerful and often punishing force that threatens to bring about destruction or retribution. Each may be used in different contexts, depending on the specific emotion or sentiment that is being conveyed.