"'Unreached people group'" is a term used most frequently among
Evangelical Christians to refer to any ethnic or linguistically distinct culture that does not have a history of Christianity.
Missionaries and the organizations that support
evangelism also use the term "the unreached" to refer to those who have not yet heard of any Christian teachings.
The Joshua Project web site defines the term this way:
The
10/40 Window is sometimes cited as a geographic term for the widest area of the world where non-Christians live today.
[1]
References
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Joshua Project
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Operation World, , Patrick, Johnstone, Paternoster, 2001,
Notes
1. Johnstone, page needed
External links
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People Groups
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Joshua Project
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Operation World