At its root, the word "evangelical" comes from the Greek word for "good news," or "gospel," says Hanbury. It involves a focus on Christ and spreading the word about His salvation (evangelizing).
Martin Luther used the word "evangelical" to describe the Protestant churches that separated from the Roman Catholic church and looked to the Gospel..."
http://www.christianheadlines.com/trending/why-christians-need-to-reclaim-what-it-means-to-be-evangelical.html
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