Far Be It Meaning

(idiomatic) A disclaimer stating that the person speaking will not do something.

Example: 1611, Bible (KJV): Samuel 20:20,
  And Joab answered and said, Far be it, far be it from me, that I should swallow up or destroy.
Pewtey in Marriage Guidance Counselor from And Now For Something Completely Different
  Well, it all started when we first went to Brighton on holiday together. Dierdre (that's my wife) and I have always been very close companions, and I never particularly anticipated any marital strife. Indeed, the very idea of consulting such a professional marital advisor as yourself has always been of the greatest repugnance to me. Although, (chuckles) far be it from me to impugn the nature of your trade, or ... or profession.