brim·stone 
(brĭmstōn′)
(brĭmstōn′)n.
1. Sulfur, especially considered as a component of the torments of hell in Christianity.
2.
a. Damnation to hell.
b. Vehement or condemnatory rhetoric, especially rhetoric warning of the torments of hell for immoral behavior: a sermon full of fire and brimstone.
[Middle English brimston, from Old English brynstān; see gwher- in the Appendix of Indo-European roots.]