evangelist:
(plural: ‘evangelists‘; pronunciation: the letter ‘g’ is said with a ‘j’ sound as in “judge” — for the right pronunciation of this word, please click here)

one of the four Evangelists
a person who travels from place to place holding/conducting evangelical meetings (Christian religious meetings);
a missionary; a Protestant preacher;
a person who teaches/preaches God’s word (mostly Christian gospel);
(always with a Capital ‘E’ — Evangelist) any one of the four authors of the New Testament (the Bible) books — Mathew, Mark, Luke or John,

an evangelist preaching a large gathering
My neighbour who lives on the upper floor our flat is an evangelist, and whenever he meets me in the lift/elevator or in the parking lot, he makes it a point to preach me a little of the gospel!
Though there are very good evangelists who do their job sincerely, there are equally good number of bad evangelists who make a lot of money by collecting donations from their congregations.
Televangelists are those evangelists who preach the masses on television.
Some atheists, those who say there is no god, wonder why there is so much crime and evil in today’s world when there are so many evangelists of every kind preaching people ‘peace and harmony’ and praying God to show a merciful way out for those sinners!
A brand evangelist is a person in a company or organisation whose presence builds up a good rapport with clients.

a televangelist on a TV show
