This dialogue discusses the legitimacy of baptism and ecclesiastical authority concerning heretics, particularly focusing on whether those baptized by heretics such as Arians can be considered true Christians and if their baptism is valid.
Jerome emphasizes that the Church accepts those who sincerely repent and confesses that the validity of baptism depends on faith and the true faith in Christ, while the opponent argues for strict separation and rejection of heretical baptism, especially in the case of bishops who continue heresy.
Throughout the exchange, Jerome advocates for mercy, unity, and adherence to traditional Church practices, contrasting with the opponent's more rigorous and exclusionary stance, ultimately emphasizing the importance of continuity in the Church founded by the Apostles.