brim·stone 
/ˈbrɪmˌstoʊn/ noun
/ˈbrɪmˌstoʊn/ noun [noncount] old-fashioned : sulfur — now usually used in the phrase fire and brimstone to refer to descriptions of hell ▪ The preacher's sermons were full of fire and brimstone. [=the preacher's sermons warned of the punishment of hell]
