The sources for the history of Parthia and the wars with Rome are scant and scattered. The Parthians followed the Achaemenid tradition and favored oral historiography, which assured the corruption of their history once they had been vanquished. The main sources of this period are thus Roman (Tacitus, Marius Maximus, and Justin) and Greek historians (Herodian, Cassius Dio and Plutarch). The 13th book of the Sibylline Oracles narrates the effects of the Roman–Persian Wars in Syria from the reign of Gordian III to the domination of the province by Odaenathus of Palmyra. With the end of Herodian's record, all contemporary chronological narratives of Roman history are lost, until the narratives of Lactantius and Eusebius at the beginning of the 4th century, both from a Christian perspective.