The best sermon is preached by the minister who has a sermon to preach and not by the man who has to preach a sermon.

Feather contrasts intrinsic purpose with mere obligation. A minister “who has a sermon to preach” speaks from conviction—an idea that feels urgent, lived, and addressed to a real need—whereas someone who “has to preach a sermon” is driven by schedule, duty, or professional routine. The aphorism generalizes beyond clergy: the most persuasive writing, teaching, or leadership comes when the speaker has something necessary to say, not simply a slot to fill. It also implies that audiences can sense the difference between authentic moral or intellectual pressure and performance produced to meet expectations.