It is dedicated to "Constantius", who is supposed by Fabricius to be the same Constantius who married Placidia (i.e. Constantius III), the daughter of Theodosius the Great, and who reigned for seven months in conjunction with the Emperor Honorius.
A certain Marinus, a follower of Bardaisan and a dualist, who is refuted in the "Dialogue of Adamantius", held the doctrine of a twofold primeval being; for the devil, according to him is not created by God.