...we cannot be sure how much or how little of the four
Gospels are accurate and include the words of Christ and His undiluted
teachings, all we can be sure of, as Bahá'ís, is that what has been quoted by Bahá'u'lláh
and the Master must be absolutely authentic. As many times passages in the
Gospel of St. John are quoted we may assume that it is his Gospel and much of
it accurate.
(From a letter dated 23 January 1944 written on behalf of Shoghi
Effendi to an individual believer; compilation on ‘The Bible: Extracts on the
Old and New Testaments’, prepared by the Research Department of the Universal
House of Justice )