書名出處：《聖經·舊約·啟示錄》第六章第8節：
我就觀看，見有壹匹灰馬。騎在馬上的，名字叫死。陰府也隨著他。有權柄賜給他們，可以用刀劍，饑荒，瘟疫（瘟疫或作死亡），野獸，殺害地上四分之壹的人。
the Bible (Revelation 6:8)：
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.