Your friend saw this resource on bethinking.org and thought you should see it:
Was Jesus a Real Person?
This video examines the historical evidence for the life of Jesus, including discussion of the non-biblical evidence.
See the full resource online by visiting bethinking.org:
https://www.bethinking.org/jesus/real-person
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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.