Revelation 9:17

And this is what the horses and their riders appeared to be like in my vision:--They had breastplates of fire, blood-red and sulphurous, and the heads of the horses were like lions' heads, while out of their mouths issue fire, and smoke, and sulphur.

Revelation 9:18

Through these three Curses a third of mankind perished--because of the fire, and the smoke, and the sulphur that issued from their mouths;

Revelation 14:10

that man shall drink the maddening wine of God that has been poured unmixed into the cup of his Wrath, and he shall be tortured with fire and sulphur before the eyes of the holy angels and before the eyes of the Lamb.

Revelation 19:20

The Beast was captured, and with him was taken the false Prophet, who performed the marvels before the eyes of the Beast, with which he deceived those who had received the brand of the Beast and those who worshiped his image. Alive, they were thrown, both of them, into the fiery lake 'of burning sulphur.'

Revelation 21:8

But as for cowards, unbelievers, the degraded, murderers, the impure, sorcerers, idolaters, and all liars--their place will be in the burning lake of fire and sulphur. That is the Second Death.'

Revelation 9:9

and they had what seemed to be iron breastplates, while the noise of their wings was like the noise of chariots drawn by many horses, galloping into battle.

Revelation 11:5

When any one wishes to harm them, 'fire comes from their mouths and consumes their enemies'; and whoever wishes to harm them will, in this way, inevitably perish.

Revelation 20:10

and the Devil, their deceiver, was hurled into the lake of fire and sulphur, where the Beast and the false Prophet already were, and they will be tortured day and night for ever and ever.

Revelation 21:20

the fifth a sardonyx; the sixth a carnelian; the seventh a chrysolite; the eighth a beryl; the ninth a topaz; the tenth a chrysoprase; the eleventh a hyacinth; and the twelfth an amethyst.

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
and they had what seemed to be iron breastplates, while the noise of their wings was like the noise of chariots drawn by many horses, galloping into battle.

Jacinth

Revelation 21:20
the fifth a sardonyx; the sixth a carnelian; the seventh a chrysolite; the eighth a beryl; the ninth a topaz; the tenth a chrysoprase; the eleventh a hyacinth; and the twelfth an amethyst.

Brimstone

Revelation 9:18
Through these three Curses a third of mankind perished--because of the fire, and the smoke, and the sulphur that issued from their mouths;
Revelation 14:10
that man shall drink the maddening wine of God that has been poured unmixed into the cup of his Wrath, and he shall be tortured with fire and sulphur before the eyes of the holy angels and before the eyes of the Lamb.
Revelation 19:20
The Beast was captured, and with him was taken the false Prophet, who performed the marvels before the eyes of the Beast, with which he deceived those who had received the brand of the Beast and those who worshiped his image. Alive, they were thrown, both of them, into the fiery lake 'of burning sulphur.'
Revelation 21:8
But as for cowards, unbelievers, the degraded, murderers, the impure, sorcerers, idolaters, and all liars--their place will be in the burning lake of fire and sulphur. That is the Second Death.'