John Gill preaches a heartfelt sermon in memory of Mr. Benjamin Seward, emphasizing the characteristics of a truly good man as perfect and upright, and the peace that comes at the end of such a life. He reflects on the importance of observing and marking the lives of those who embody these qualities, particularly in light of Mr. Seward's exemplary character and his calm acceptance of death. Gill encourages the congregation to aspire to these virtues, reminding them that the end of the righteous is peace, and that true believers can find comfort in their faith amidst life's trials.