Even more so than The One I Love, the structure is extremely simple and repetitive… and here it is.

Intro

Verse 1

Mama, take this badge off of me

I can’t use it anymore.

It’s gettin’ dark, too dark for me to see

I feel like I’m knockin’ on heaven’s door.

Chorus

Knock, knock, knockin’ on heaven’s door

Knock, knock, knockin’ on heaven’s door

Knock, knock, knockin’ on heaven’s door

Knock, knock, knockin’ on heaven’s door

Verse 2

Mama, put my guns in the ground

I can’t shoot them anymore.

That long black cloud is comin’ down

I feel like I’m knockin’ on heaven’s door.

Chorus

Knock, knock, knockin’ on heaven’s door

Knock, knock, knockin’ on heaven’s door

Knock, knock, knockin’ on heaven’s door

Knock, knock, knockin’ on heaven’s door