The letter is a communication to Augustine, Prosper highlights the writer's previous correspondence through a deacon and the intention to address theological concerns regarding Pelagianism. The writer notes that some Christians in Marseille believe Prosper's views on the calling of the elect contradict traditional ecclesiastical teachings. Despite the publication of Prosper's work "Correction and Grace," which aimed to clarify these issues, the misunderstanding persists, causing division among believers. The writer expresses concern over the potential for heretical beliefs to mislead the faithful and emphasizes the importance of clear guidance in matters of faith.