Pained at the extreme discomfort caused to his friends and intimidation caused to others, Prometheus breaks the mystery of the Cryptic Writings. Clues, he cannot provide for he's already said too much. Ergo, the riddle is hereby broken.
Some are hints, the others clues
Look between the I /I.
The I /I as most bloggers would know, are the tags that put text into italics. So the hint is to look for text in italics.
"Prometheus asks his you to put yourself before high as he himself is before the golden state."
Yourself, from your point of view is 'Me', High is a synonym for tall. Similarly, he himself, Prometheus, from his grammatically correct point of view would be 'I'. California, land of another mythical hero, Conan the Barbarian, is the Golden State.
Put these together in the prescribed order. Me, Tall, I, CA
Metallica
The four refer to James (Jaymz) Hetfield, Lars Ulrich, Kirk Hammet and Jason Newsted, the four heroes.
"One moved to another temple". Dave Mustaine, the original lead guitarist, was kicked out for his drug abuse and solo hero antics. He went on to create Megadeth, another temple that Prometheus visits.
"One died", Cliff Burton, the bass guitarist from the first lineup died in a freak accident.
"From homicide till black". Homicide, meaning Kill 'em All, their first produced album and Black, the eponymous album also called the black album by fans. Prometheus loved Metallica's work from Kill 'em All, ...And Justice for All, Ride the Lightning, Master of Puppets and Metallica (eponymous album). Then Metallica changed their sound. Load, Re-load, Live Shit, St. Anger... Prometheus stopped listening to Metallica. Ergo, the four deities fell from the grace of Prometheus.
Finally, the stress on One indicated Prometheus' love for the Metallica song of the same name. The pic clue was originally intended to be a still from the One video that was to be the next clue. Similarly, the Four Rohirrim. LOTR fans would know Rohirrim are the horse-lords or horsemen. Four Horsemen is another Metallica number favorited by Prometheus.
Prometheus expected the wielder of the Argentum Sword, or SilverSabre, a blogger who loves Metallica and guitars, to solve this. Maybe Prometheus didn't give him enough time.
Ladies and Gentlemen, the code is cracked.