“As a preacher, Paul was a divinely appointed herald of Christ crucified. Being a herald is entirely different than being an orator. A herald is judged solely on the basis of faithfully delivering the message exactly as it has been entrusted to him. He is not responsible for the response of the listener. Rather, his job is to faithfully dispatch his message.
While an orator is measured by the response he is able to elicit from his listeners, this is not the case with a herald. An orator is results-driven, whereas a herald is message-driven.” (Steven Lawson, The Kind of Preaching God Blesses)