Revelation 9:17

And thus I saw the horses in the vision, and those who sat on them; they had breastplates, fiery, and hyacinthine, and sulphurous: and the heads of the horses were like the heads of lions, and out of their mouths issued fire and smoke and brimstone.

Revelation 9:18

By these three plagues was the third part of men killed, by the fire, and the smoke, and the brimstone that issued out of their mouths.

Revelation 14:10

and he shall be tormented with fire and brimstone in the presence of the holy angels, and in the presence of the Lamb:

Revelation 19:20

And the beast was taken, and the false prophet that was with him, who did signs in his presence, with which he deceived those who received the mark of the beast, and those who worshiped his image. These two were thrown alive into the lake of fire, which burns with brim stone.

Revelation 21:8

But the fearful, and the unbelieving, and the detestable, and murderers and lewd persons and sorcerers and idolaters and all liars, shall have their part in the lake that burns with fire and brimstone, which is the second death.

Revelation 9:9

And they had breastplates like breastplates of iron; and the sound of their wings was like the sound of chariots of many horses running to battle.

Revelation 11:5

And if any man will injure them, fire proceeds out of their mouth, and devours their enemies; and if any one will injure them, he must be killed in this way.

Revelation 20:10

And the devil who deceived them was thrown into the lake of fire and brimstone, where the beast and the false prophet are: and they shall be tormented day and night from age to age.

Revelation 21:20

the fifth, sardonyx; the sixth, sardius; the seventh, crysolite; the eighth, beryl; the ninth, topaz; the tenth, chrysoprase; the eleventh, hyacinth; the twelfth, 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 breastplates like breastplates of iron; and the sound of their wings was like the sound of chariots of many horses running to battle.

Jacinth

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

Brimstone

Revelation 9:18
By these three plagues was the third part of men killed, by the fire, and the smoke, and the brimstone that issued out of their mouths.
Revelation 14:10
and he shall be tormented with fire and brimstone in the presence of the holy angels, and in the presence of the Lamb:
Revelation 19:20
And the beast was taken, and the false prophet that was with him, who did signs in his presence, with which he deceived those who received the mark of the beast, and those who worshiped his image. These two were thrown alive into the lake of fire, which burns with brim stone.
Revelation 21:8
But the fearful, and the unbelieving, and the detestable, and murderers and lewd persons and sorcerers and idolaters and all liars, shall have their part in the lake that burns with fire and brimstone, which is the second death.