: Red Horse (Halo 2) - When He broke the second seal, I heard the second
: living creature saying, “Come.” And another, a red horse, went out; and to
: him who sat on it, it was granted to take peace from the earth, and that
: men would slay one another; and a great sword was given to him. The
: analysis on the article notes that Red Horse " is often pictured
: holding a sword upwards as like ready for battle " just as John holds
: up his dual SMG's. " In some translations, the color is specifically
: a "fiery" red. This color, as well as the rider's possession of
: a great sword, suggests blood that is to be spilled." may be
: connected to the original cover art of Halo 2 where John, with his guns
: up, is set forward of a "fiery red" background of a burning
: Mombasa. " The second horseman may represent civil war as opposed to
: the war of conquest that the first horseman is sometimes said to bring.
: Other commentators have suggested it might also represent persecution of
: Christians " Awful lot of civil war and religious persecution in Halo
: 2. All caused by John.

I have a bad habit of flooding the replies, but a "great sword" and civil war seems like a good reference to the Arbiter too.