Your friend saw this resource on bethinking.org and thought you should see it:
The Roots of Our Gender Identity Crisis
What cultural shifts have led to the current gender debate?
See the full resource online by visiting bethinking.org:
https://www.bethinking.org/human-life/the-roots-of-our-gender-identity-crisis
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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.