Your friend saw this resource on bethinking.org and thought you should see it:
Why Should I Believe Christianity? - a review
James N Anderson provides a real, concrete analysis of the reasons Christianity makes most sense of the world.
See the full resource online by visiting bethinking.org:
https://www.bethinking.org/is-christianity-true/why-believe-christianity-review
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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.