Do you have to have professional credentials to be a preacher? In the list of spiritual gifts that Paul speaks of (both in his letter to the Roman church, and the church in Corinth) he does not list one of the spiritual gifts of leadership, as being a preacher.
He does talk about one being able to prophecy (to speak forth for God) or one who is a pastor (to shepherd) but specifically he does not mention the gift of preaching.
To me Paul is saying in our text, that preaching the Gospel of Jesus Christ, is the responsibility of all Christians, whenever the opportunities present themselves. How will people hear of God's salvation plan (through His Son) if we don't share it?
We know that through the years the church has adopted the concept of the professional clergy. The people come together to listen to one person who has fulfilled the church requirements to do the work of "preaching" the Word of God. But when I look at the example of Jesus, I see that He "went about all Galilee teaching in their synagogues, preaching the Gospel of the Kingdom..."(Mt 4:23a)
As a Christians, we are to do as Jesus, and GO out among the people and "preach" the most wonderful essential, message of hope there is. In a world where souls are perishing everyday. How can we not? GP