Abstract: Four types of gospel citation are identified in Augustine's commentary on John. The continuous treatment of the text is made up of the initial citation, most likely to have been taken from a manuscript, and repetitions in the same sermon which sometimes comprise sequential variants. Illustrative material is adduced in non-sequential citations. The biblical text of the title is also of considerable interest, although this is unlikely to have originated with Augustine. The overall dependence of the work on a Vulgate-text type is demonstrated: variations from this are reversions to Augustine's mental text.

Keywords: Tractatus, tractates, Gospel, John, Augustine, commentary, lemma, sermon, title, Vulgate,