所出產的書籍，是憑藉著聖經而變得有力

透過印刷使徒工作而出產的書籍、期刊及所有的印刷品，都是憑藉著聖經而變得有力……它們越是吸取、遵循、依據、引述、應用及忠於聖經，特别是福音，就越有效力。（AE, 165）

Through the press apostolate, books, periodicals, and other publications acquire effectiveness in virtue of the Bible… The more they draw from, adhere to, depend on, reproduce, show devotion to and apply the Bible, and the Gospel in particular, the greater will be their effectiveness (AE, 165).