'Fire' in the Bible

just as Sodom and Gomorrah and the adjacent cities, since they in the same way as these angels indulged in gross immoral freedom and unnatural vice and sensual perversity. They are exhibited [in plain sight] as an example in undergoing the punishment of everlasting fire.

save others, snatching them out of the fire; and on some have mercy but with fear, loathing even the clothing spotted and polluted by their shameless immoral freedom.