And there went out another horse that was red: and power was given to him that sat thereon to take peace from the earth, and that they should kill one another: and there was given unto him a great sword.
All Commentaries on Revelation 6:4 Go To Revelation 6
Tertullian of Carthage
AD 220
For, in coming to the High Priest of the Father-Christ-all impediments must first be taken away, in the space of a week, that the house which remains, the flesh and the soul, may be clean; and when the Word of God has entered it, and has found "stains of red and green "forthwith must the deadly and sanguinary passions "be extracted "and "cast away "out of doors-for the Apocalypse withal has set "death "upon a "green horse "but a "warrior "upon a "red"