"Damien" is a song by American heavy metal band Iced Earth off their 2000 album Horror Show.

Opened by a bass line (one of the only Iced Earth songs to do so) and shortly backed by a pseudo-religious Gregorian chant, it eventually slows down in to a simple yet tense acoutic guitar line. As the tension builds up and dies down twice, the song undergoes its second time change, at 1:20 the distorted guitars crash in along with the rythm section and the growly baritone vocals of Matthew Barlow. At 1:59, after a menacing twin guitar riff, it goes back to the slow acoutic part, this time accompanied by the rythm and vocals, the latter now in a softer, more melodic style. It shortly goes back to the heavy, trudding style. Once again the twin guitar riff starts up, along with the decresendoing screams of Matthew Barlow.
However, this time it heads into the chorus which, aside from Richard Christy's fast double bass beats, is slightly slower and melodic, especially Barlow, who follows the vocal scheme of the earlier acoustic part and delivers the poem from the Book of Revelation:

"When the Jews return to Zion

And a comet fills the sky

The Holy Roman Empire rises

And you and I must die

From the eternal sea he rises

Creating armies on either shore

Turning man against his brother

Till man exists no more."

The song then slows back down, picking up another bassline similar to the opener. Rather than Gregorian chants, this time Steve DiGiorgio is accompanied by a spoken part from Barlow, adressing the Nazarene as the Antichrist. The song then slips back into the verse and chorus from earlier.

The lyrics deal with Damien Thorn, the son of the devil, from the 1976 movie The Omen, moreover with its second sequel Omen III: The Final Conflict as it discusses Damien as a powerful figure and very aware of his own powers. The other sequel Damien: Omen II is touched upon during the second acoustic part "As the boy becomes a man...".