John Venn (1759-1813) became rector of Clapham Church in South London in 1792 and served there until his death. He was the son of the better known, Henry Venn, also a minister in the Church of England, and a friend of William Wilberforce and Charles Simeon. He also served as chaplain to the Clapham Sect. After his death, a collection of his sermons was published by his son. The first message in the first volume is “The Importance and Difficulties of the Christian Ministry” based on 1 Corinthians 2:3. The whole message is worth reading. The following excerpt is taken from that sermon.