St. Irenaeus' Proof of the Apostolic Preaching is a classic work on Christian apologetics written by the second-century bishop Irenaeus of Lyons. In this book, Irenaeus defends the orthodox Christian faith against Gnosticism and other heresies of his time. This edition also includes an introduction and extensive footnotes by Joseph P. Smith, making it a valuable resource for scholars and students of early Christianity.

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