Your friend saw this resource on bethinking.org and thought you should see it:
What is the Bible?
A brief introduction to the Bible – what it is, how it has been put together and what it can mean for people today.
See the full resource online by visiting bethinking.org:
https://www.bethinking.org/bible/what-is-the-bible
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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.