His state became still worse when he received an affectionate but solemn letter from the Bishop warning him of his danger. An affectionate letter from a bishop must surely be the most disagreeable missive which a parish clergyman can receive. Affection from one man to another is not natural in letters. A bishop never writes affectionately unless he means to reprove severely. When he calls a clergyman his "dear brother in Christ," he is sure to go on to show that the man so called is altogether unworthy of the name.
Anthony Trollope, Dr. Wortle's School
Trollope is just so funny. He understands human nature and exploits for his humorous storytelling.