This book appears from its place in the Retractations to have been written about A.D. 395, as it is the last work named in the first book, which contains those which he wrote before he was Bishop. Some editions represent it as addressed to Consentius, but not the manuscripts. The latter are probably right, as his other work on the subject was written in answer to the inquiries of Consentius on the case of the Priscillianists many years later.