The Canons of Dordrecht
Article 3: The Preaching of the Gospel
In order that people may be brought to faith, God mercifully sends proclaimers of this very joyful message to the people he wishes and at the time he wishes. By this ministry people are called to repentance and faith in Christ crucified. For how shall they believe in him of whom they have not heard? And how shall they hear without someone preaching? And how shall they preach unless they have been sent? (Rom. 10:14-15).