NABre.....pope approved Catholic Bible...<quoted text>
"Whatsoever you shall bind on earth shall be bound in heaven."
Of the several meanings given there to the metaphor, two are of special importance here: the giving of authoritative teaching, and the lifting or imposing of the ban of excommunication. It is disputed whether the image of the keys and that of binding and loosing are different metaphors meaning the same thing. In any case, the promise of the keys is given to Peter alone.
Note: image of the keys...image:A mental picture of something not real or present.
metaphor: A figure of speech in which a word or phrase that ordinarily designates one thing is used to designate another, thus making an implicit comparison, as in "a sea of troubles" or "All the world's a stage" (Shakespeare).
Note: A figure of speech.....