Jesus Himself never once alludes to Adam, or to any part of the story of Eden."-- ALGER.] But Christ also described Himself as a door.

What is the definition of a door?
It is not enough to say that a door is a thing for letting people in and letting people out.

It is a thing for letting _some_ people in, and for shutting other people out.
To whom did Christ entrust the key of this door?
To St.Peter--to the disciple who had denied Him thrice.

What a marvellous choice! Would you have thought of doing that?
Should I have thought of doing that?
Would any theologian have invented such an idea?
But that is what Christ did.
And ever since, St.Peter and his successors have held the keys of Heaven and Hell, with power to loose and bind.

What?
you exclaim, were the Keys of Heaven and Hell entrusted to even those Popes who lived sinful lives and brought disgrace on the name of religion?
Yes.