Lyric discussion by shocktop 

Cover art for Shepherd of Fire lyrics by Avenged Sevenfold

Although the song is dark I'm almost thinking it is about Christ not Satan.

Disciple of the cross and champion in the suffering Immerse yourself into the kingdom of redemption Harden your mind through the chains of the divine Make way for the shepherd of fire

Disciple of the cross? Satan? Doesn't add up. Also the shepherd is something I associate with the lamb of God.

My Interpretation

Reread that verse. He's talking TO the "disciple of the cross and champion in the suffering" telling him to "immerse [himself] into the...." and finally says to"make way for the shepherd of fire", where he's talking about 'himself'.

its our true nature.

Satan was an angel (Lucifer); which would make sense.