"Saint John the Evangelist," might have disagreed with you.  

https://en.wikipedia.org/wiki/John_the_Evangelist

https://en.wikipedia.org/wiki/Four_Evangelists  Matthew, Mark, Luke and John.

"They are called evangelists, a word meaning "people who proclaim good news," because their books aim to tell the "good news" ("gospel") of Jesus.

Evangelism is the preaching of the gospel or the practice of giving information about a particular doctrine or set of beliefs to others with the intention of converting others to the Christian faith.
This term is not restricted to any particular Christian tradition, and should not be confused with Evangelicalism, a common term for a wide range of "Evangelical" Protestant churches and groups.

https://en.wikipedia.org/wiki/Evangelism

The Constitution of the United States allows 'true wackos' to believe and promote what they please.  Do you deny them, or yourself, that right?