On Christian Doctrine, is a famous treatise by St. Augustine of Hippo, made up of four books that describe how to interpret and teach Holy Writ. The first three books, published in 397 AD, set three duties for Christian teachers and preachers: to discover the truth in the contents of the Bible, to teach the truth from the Bible, and to defend scriptural truth when attacked.

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Translated by James Shaw. From Nicene and Post-Nicene Fathers, First Series, Vol. 2. Edited by Philip Schaff. (Buffalo, NY: Christian Literature Publishing Co., 1887.)