Revelation 6:8
They kill with war, pestilence, famine, and savage beasts. At our current global population one fourth would roughly be 2 billion people.
THE FOUR HORSEMEN OF THE APOCALYPSE; AND I LOOKED, AND BEHOLD A PALE HORSE: AND HIS NAME THAT SAT ON HIM WAS DEATH, AND HELL FOLLOWED WITH HIM; AND POWER WAS GIVEN UNTO THEM OVER THE FOURTH PART OF THE EARTH, TO KILL WITH SWORD, AND WITH HUNGER, AND WITH DEATH, AND WITH THE BEASTS OF THE EARTH.