Your friend saw this resource on bethinking.org and thought you should see it:
Suffering: If God is good, why is there so much evil in the world?
When there is so much evil and suffering all around us, how can we believe God is good?
See the full resource online by visiting bethinking.org:
https://www.bethinking.org/would-a-good-god-allow-suffering/suffering-if-god-is-good-why-is-there-so-much-evil-in-the-world
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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.