Lyric discussion by makeamesslikeace 

Cover art for Where Have You Been lyrics by Manchester Orchestra

clearly its not god, its:

joy, where have you been?

The Lyric is God u moron cuz he's screaming at god asking him where he has been!

definitely God

it is most certainly god anyone with half a brain could figure tht out cuz when throughout the whole song does he say joy hmm? he doesn't and plus tht would make absolutely no sense with the song