Lyric discussion by adsfkahsdf 

Cover art for Forty Days lyrics by Streetlight Manifesto

"I've tasted seven sins, so they won't let me in I knock knock knock until my knuckles are bruised and raw" Seven deadly sins. He is knocking at the gates of heaven and not getting in.

"What a way to begin: we inherit sin." is about original sin. Christian beliefs even if you live a perfect life without being a christian you'll still go to hell.