Your friend saw this resource on bethinking.org and thought you should see it:
Engaging with Muslims
'Engaging with Muslims' is an insightful, practical guide to help everyone begin sharing the gospel with Muslims
See the full resource online by visiting bethinking.org:
https://www.bethinking.org/islam/engaging-with-muslims
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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.