'Mouths' in the Bible

This was how I saw the horses in my vision: The riders wore breastplates that had the color of fire, sapphire, and sulfur. The heads of the horses were like lions' heads, and fire, smoke, and sulfur came out of their mouths.

By these three plagues the fire, the smoke, and the sulfur that came out of their mouths one-third of humanity was killed.

For the power of these horses is in their mouths and their tails. Their tails have heads like snakes, which they use to inflict pain.

And if anyone should want to hurt them, fire comes out of their mouths and burns up their enemies. If anyone wants to hurt them, he must be killed in this manner.