The only authority with which you can speak is the authority of divine commission. …Everybody is commissioned to be a witness to Jesus Christ. Not everyone is commissioned to be a pastor and teacher. The fact that a number of individuals have banged up against a pulpit to the distraction of their own souls and to the detriment of their own people is evident throughout the entire nation. Better to be a king, or a doctor, or a farmer, or a plowman, to the glory of God than to end up in this position uncommissioned, uncalled, unsent.
–Alistair Begg on Acts 26 Nov. 17, 2010 at SBTS “Preaching the Gospel from Acts”