Although Paulus Orosius's most important book was the Historiae Adversus Paganos, his other two surviving books must also be taken into account: Commonitorium and Liber Apologeticus.

The full name of his first book is Consultatio sive commonitorium ad Augustinum de errore Priscillianistarum et Origenistarum (in English: Warnings and Reminders by Augustine Against the Errors of the Priscillians and the Origenists).
Its chronology is littered with the same grey areas as Orosius's biography.
In principle it is a book intended for Saint Augustine and therefore it must have been written before Orosius arrived in Africa, between 409 and 414 as discussed above.
 The second chronological limit is 415, which is traditionally considered to be the date when Augustine's book Liber ad Orosium contra Priscillianistas et Origenistas was published, in which Augustine replies to Orosius's Commonitorium.

The book is not only aimed at Saint Augustine but was also preceded by conversations with the saint.
It not only describes Orosius journey to Africa, but also summarises the beliefs of Priscillianism and Origenism, and it asks for Saint Augustine's advice regarding these theological issues, thereby exposing some of Orosius's theological doubts.

The full name of Orosius's second book is Liber apologeticus contra Pelagium de Arbitrii libertate.
It was published at the time of Orosius's participation in the Council of Jerusalem in 415.
 The book is the result of a theological debate during which Archbishop John II accused Orosius of heresy due to his idea that man cannot remain free of sin, not even with the help of divine intervention.

In order to defend himself from these accusations Orosius wrote Liber Apologeticus, in which he describes his motives for participating in the synod, he was invited by Saint Jerome, and rejects the accusation of heresy made against him.
However, neither of these two books are of a historical nature, despite containing elements that help in the reconstruction of Orosius's life.
Although Paulus Orosius's most important book was the Historiae Adversus Paganos, his other two surviving books must also be taken into account: Commonitorium and Liber Apologeticus.
The full name of his first book is Consultatio sive commonitorium ad Augustinum de errore Priscillianistarum et Origenistarum (in English: Warnings and Reminders by Augustine Against the Errors of the Priscillians and the Origenists). Its chronology is littered with the same grey areas as Orosius's biography. In principle it is a book intended for Saint Augustine and therefore it must have been written before Orosius arrived in Africa, between 409 and 414 as discussed above.  The second chronological limit is 415, which is traditionally considered to be the date when Augustine's book Liber ad Orosium contra Priscillianistas et Origenistas was published, in which Augustine replies to Orosius's Commonitorium.
The book is not only aimed at Saint Augustine but was also preceded by conversations with the saint. It not only describes Orosius journey to Africa, but also summarises the beliefs of Priscillianism and Origenism, and it asks for Saint Augustine's advice regarding these theological issues, thereby exposing some of Orosius's theological doubts.
The full name of Orosius's second book is Liber apologeticus contra Pelagium de Arbitrii libertate. It was published at the time of Orosius's participation in the Council of Jerusalem in 415.  The book is the result of a theological debate during which Archbishop John II accused Orosius of heresy due to his idea that man cannot remain free of sin, not even with the help of divine intervention.
In order to defend himself from these accusations Orosius wrote Liber Apologeticus, in which he describes his motives for participating in the synod, he was invited by Saint Jerome, and rejects the accusation of heresy made against him. However, neither of these two books are of a historical nature, despite containing elements that help in the reconstruction of Orosius's life.
Orosius