Revelation 6:8

And there I saw a horse the color of ashes, and its rider's name was Death, and Hades followed him. They were given power over one quarter of the earth, to kill the people with sword, famine, death, and the wild animals 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
And there I saw a horse the color of ashes, and its rider's name was Death, and Hades followed him. They were given power over one quarter of the earth, to kill the people with sword, famine, death, and the wild animals of the earth.