Treasury of Scripture Knowledge

Summary

And thus I saw the horses in the vision, and them that sat on them, having breastplates of fire, and of jacinth, and brimstone: and the heads of the horses were as the heads of lions; and out of their mouths issued fire and smoke and brimstone.

Bible References

Having

Revelation 9:9
they had breastplates that seemed to be made of steel; the noise of their wings was like the noise of vast numbers of chariots and horses rushing into battle;

Jacinth

Revelation 21:20
the fifth sardonyx, the sixth sardius, the seventh chrysolite, the eighth beryl, the ninth topaz, the tenth chrysoprase, the eleventh jacinth, the twelfth amethyst.

Brimstone

Revelation 9:18
One-third of mankind was killed by these three plagues: the fire, smoke, and sulphur that kept pouring out of their mouths.
Revelation 14:10
himself will have to drink the wine of God's vengeance, poured unmixed into the cup of His wrath, and be tortured with fire and brimstone before the eyes of the holy angels and the Lamb.
Revelation 19:20
Then the wild beast was captured and with him the false prophet who performed wonders in his presence, by which he led astray those who let the mark of the wild beast be put on them and worshiped his statue. Both of them were hurled alive into the fiery lake that burns with brimstone.
Revelation 21:8
But the cowards, the unfaithful, the polluted, the murderers, the sexually immoral, the practicers of magic, the worshipers of idols, and all liars will have their portion in the lake that keeps on burning with fire and brimstone. This is the second death."