"What is an evangelist anyways? An evangelist isn’t a personality type or a personality disorder, but an evangelist is one who brings good news, both in the proclamation with the mouth and their actions. If this is the case, where does it say that an evangelist is going to be an extrovert or introvert? What if God’s plan was for everyone to do the work of an evangelist? (2 Tim 4:5). Think of the power of the church if we empower both the extrovert and the introvert to be the representation of the good news in the way that God has made them? How many more people would be reached for the sake of Jesus?"
(You can read the entire article at: http://www.vergenetwork.org/2013/03/19/the-introverted-evangelist-seth-mcbee/ .)