Your friend saw this resource on bethinking.org and thought you should see it:
Are the apocryphal gospels true?
Some reflections on why the canonical Gospels are in the Bible whereas the apocryphal Gospels are not.
See the full resource online by visiting bethinking.org:
https://www.bethinking.org/is-the-bible-reliable/are-the-apocryphal-gospels-true
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bethinking.org is a collection of resources which aims to make sense of the big questions of life about God, Jesus and Christianity.