Knockin' on Heaven's Door Lyrics

Lyric discussion by blackdog159 

Cover art for Knockin' on Heaven's Door lyrics by Bob Dylan

I disagree with Dunehermit, I'm not sure what hes referring to but its implied that he's not giving up whatever whatever it is through choice "I CANT shoot them anymore," I think implies somethings stoped working and so he's given up and is now resined to the bleak outcome.