evangelistyoudaoicibaDictYouDict[evangelist 词源字典]
evangelist: [12] The original sense of evangelist was ‘writer of a gospel’. English used to have the word evangel ‘gospel’. This came via Old French evangile and ecclesiastical Latin evangelium from Greek euaggélion, which in classical times meant ‘reward for bringing good news’ (it was a compound based ultimately on the prefix eu- ‘good, well’ and the noun ággelos ‘messenger’ – source of English angel).

Later on it came to mean simply ‘good news’, and in early Christian texts written in Greek it denoted specifically any of the four books of the New Testament written by Matthew, Mark, Luke, and John. (English gospel was originally a literal translation of it.) Evangelist itself comes from the Greek derivative euaggelistés.
=> angel[evangelist etymology, evangelist origin, 英语词源]
evangelist (n.)youdaoicibaDictYouDict
late 12c., "Matthew, Mark, Luke or John," from Old French evangelist and directly from Late Latin evangelista, from Greek euangelistes "preacher of the gospel," literally "bringer of good news," from euangelizesthai "bring good news," from eu- "good" (see eu-) + angellein "announce," from angelos "messenger" (see angel).

In early Greek Christian texts, the word was used of the four traditional authors of the narrative gospels. Meaning "itinerant preacher" was another early Church usage, revived in Middle English (late 14c.). Classical Greek euangelion meant "the reward of good tidings;" sense transferred in Christian use to the glad tidings themselves. In Late Latin, Greek eu- regularly was consonantized to ev- before vowels.