In this sermon, the speaker begins by addressing the concern of retaining and remembering the messages heard during the week. He shares a story about a letter published in a British weekly paper, where the writer expressed their inability to remember any of the 3,000 sermons they had heard in 30 years of attending church. The speaker then suggests that ministers may need to consider if their time could be better spent on something else. The sermon also references a parable in Matthew 20 about a landowner hiring workers for his vineyard.