King James Bible Dictionary

An inflammable mineral substance found in quantities on the shores of the Dead Sea. The cities of the plain were destroyed by a rain of fire and brimstone (Genesis 19:24, 25). In Isaiah 34:9 allusion is made to the destruction of these cities. This word figuratively denotes destruction or punishment (Job 18:15; Isaiah 30:33; 34:9; Psalms 11:6; Ezekiel 38:22). It is used to express the idea of excruciating torment in Revelation 14:10; 19:20; 20:10.

Fire and brimstone rained upon Sodom
Genesis 19:24; Luke 17:29

In Palestine
Deuteronomy 29:23

Figurative
Job 18:15; Psalms 11:6; Isaiah 30:33; Ezekiel 38:22; Revelation 9:17-18; Revelation 14:10; Revelation 19:20; Revelation 21:8

Brimstone, or sulphur, is found in considerable quantities on the shores of the Dead Sea. (Genesis 19:24) It is a well-known simple mineral substance, crystalline, easily melted, very inflammable, and when burning emits a peculiar suffocating odor. It is found in great abundance near volcanoes. The soil around Sodom and Gomorrah abounded in sulphur and bitumen.

BRIM'STONE, noun Sulphur; a hard, brittle, inflammable substance, of a lemon yellow color, which has no smell, unless heated, and which becomes negatively electric by heat and friction. It is found, in great quantities, and sometimes pure, in the neighborhood of volcanoes. It is an ingredient in a variety of minerals and ores. The sulphur of commerce is procured from its natural beds, or artificially extracted from pyrites.