What if the sword kills the pen
What if the god kills the man
And if he does it with love
Well then it’s death from above

ob·sess /v/

  1. [T usually passive] If something or someone obsesses you, you think or worry about them all the time and you cannot think about anything else – used to show disapproval.
  2. be obsessing about/over sth/sb: informal to think about something or someone much more than it is necessary or sensible.