There is some dispute over the genuineness of the passage between John 7:53 and 8:11. It appears in every English translation since the first King James Version but some translations note the possibility that it is not part of the original text.
F.H.A. Scrivener affirmed that “the arguments in its favor, internal even more than external, are so powerful, that we can scarcely be brought to think it an unauthorized appendage to the writings of John" - A Plain Introduction to the Criticism of the New Testament ...
Authenticity may mean:
Authenticity (musicology), used in musicology to describe how individuals expericence music as being authentic, real or original as opposed to being commercial
Authenticity (philosophy), a particular way of dealing with the external world
Authenticity (psychology), a psychological concept in which the individual derives gratification and positive emotions from exercising signature strengths
Authenticity (reenactment), in historical reenactment, a measure of how close an it ...