Preaching is logic on fire
What is preaching? Logic on fire! Preaching is theology coming through a man who is on fire. A true understanding and experience of the Truth must lead to this. I say again that a man who can speak about these things dispassionately has no right whatsoever to be in a pulpit; and should never be allowed to enter one.
— Martyn Lloyd-Jones, Preaching and Preachers, p. 97