Lyric discussion by Amberyoko 

Cover art for Clear lyrics by Twenty One Pilots

I agree. This song like many of their songs is about the inner spiritual battle we all deal with on a daily basis and also from our pasts. I believe this is a song about the phases of the journey to enlightenment.

I think the "clarity" he is referring to here is within the lyrics "Impostor, been fostered, then my new father drained my dirty blood "

Phase "Imposter" - referring to the initial struggle with being/becoming a Christian. There is a lot of tug-a-war between your old life and your new identity in your new Christian beliefs. "Two Faces."

Phase "Been Fostered" - while exploring christianity, one can hear God being referred to as "father." As you journey more and more under God's wing, it is almost like you are an orphaned child being fostered by a new true parent (God).

Phase "then my new father drained my dirty blood" - This is where I think the song title "Clear" derived from. Literally when you accept Jesus into your heart, you realize your new father sent his son to drain your dirty blood, in other words sacrificed himself and bled so we're forgiven and no longer have dirty blood. We are free. We are CLEAR.

And that my friends indeed is a greater love.