Plural of evangelical; people who practice or believe in evangelical Christianity.
From 'evangelical' (originally an adjective) used as a noun, then pluralized with '-s.' English often converts adjectives to nouns by treating them as referring to people who embody that quality.
There are roughly 600 million evangelicals in the world today—that's about 8% of humanity all connected by a theological movement that barely existed before the 1700s.
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