Your friend saw this resource on bethinking.org and thought you should see it:
Christianity and the Tooth Fairy
Is belief in Christianity and God like believing in the tooth fairy? Or are there rational grounds that justify the beliefs of Christians?
See the full resource online by visiting bethinking.org:
https://www.bethinking.org/does-science-disprove-god/christianity-and-the-tooth-fairy
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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.