Lyric discussion by Blaringblur 

Cover art for Behold A Pale Horse lyrics by Angels and Airwaves

"And they know who we are The seven angels sing And several billion die With the earth shaking Yeah they know who we are And they will set us free"

Not sure if Tom knows anything about the so-called "Indigo Children" but if he does I could definitely see these lyrics being about that. Really good song to lead into the album's final track.