When the sixth angel blew his trumpet, I [John]  heard a voice from the four horns of the gold altar in front of God. The voice said to the sixth angel who had the trumpet, “Release the four angels who are held at the great Euphrates River.”  The four angels who were ready for that hour, day, month, and year were released to kill 1/3 of humanity.  

       The soldiers on horses numbered 20,000 times 10,000. I heard how many there were. The horses and their riders looked like this:      The riders had breastplates that were fiery red, pale blue, and yellow. 
   The horses had heads like lions. 
   Fire, smoke, and sulfur came out of their mouths.  

       These three plagues—the fire, smoke, and sulfur which came out of their mouths—killed 1/3 of humanity.  The power of these horses is in their mouths and their tails. (Their tails have heads like snakes which they use to hurt people.)
 
       The people who survived these plagues still did not turn to me and change the way they were thinking and acting. If they had, they would have stopped worshiping demons and idols made of gold, silver, bronze, stone, and wood, which cannot see, hear, or walk.           
       They did not turn away from committing murder, practicing witchcraft, fornications, or stealing.