From the Retractations, Book II. Chap. 60.

“ Then^23832383    i.e. A.D. 420, the work mentioned just before belonging to the early part of that year. Consentius is thought to be the writer of ep. 119, to Augustin, and ep. 120, and 205, are addressed to him. This is the work referred to in the Enchiridion, ch. 18, p. 243. also I wrote a Book against Lying, the occasion of which work was this. In order to discover the Priscillianist heretics, who think it right to conceal their heresy not only by denial and lies, but even by perjury, it seemed to certain Catholics that they ought to pretended themselves Priscillianists, in order that they might penetrate their lurking places. In prohibition of which thing, I composed this book. It begins: Multa mihi legenda misisti.”