Revelation 6:8

So I looked, and there was a livid horse; its rider's name was Death, and Hades followed him. They were given power over the fourth part of the earth, to kill men with sword and famine and plague and by the wild beasts of the earth.

Treasury of Scripture Knowledge

Summary

It shall devour the strength of his skin: even the firstborn of death shall devour his strength.

The firstborn

Bible References

The firstborn

Revelation 6:8
So I looked, and there was a livid horse; its rider's name was Death, and Hades followed him. They were given power over the fourth part of the earth, to kill men with sword and famine and plague and by the wild beasts of the earth.