At airō, Justin Edwards writes:
It is my conviction that if we are going to identify ourselves as an evangelist (in the official use of this designation), we need to understand what an evangelist is as Scripture defines it. Yes, the evangelist preaches the Gospel, and yes, that is a primary responsibility. But that is not all the evangelist does. He also teaches the Word, equips the saints in the church and mobilizes them to preach the Gospel, and he builds up the body of Christ to mature in the faith.
Edwards argues that in one sense, all Christians are evangelists, but not all Christians are called to the office of evangelist. Edwards offers practical considerations for the believer to determine whether he is called to be an evangelist, and how to seek counsel from church leadership for guidance.