evangelical

Concise Oxford English Dictionary © 2008 Oxford University Press:
evangelical /ˌiːvanˈjɛlɪk(ə)l/

▶adjective

• 1 of or according to the teaching of the gospel or the Christian religion.

  ■ of or denoting a tradition within Protestant Christianity emphasizing the authority of the Bible, personal conversion, and the doctrine of salvation by faith in the Atonement.

• 2 fervent in advocating something.

▶noun a member of the evangelical tradition in the Christian Church.

– derivatives
evangelic adjective,
evangelicalism noun,
evangelically adverb.