Scripture belonged to the church, and it was only in the church, within the community of right faith, that Scripture could be adequately understood and correctly interpreted. Heretics, namely, those outside of the church, had no key to the mind of the Scripture. It was not enough simply to quote scriptural words and texts (the “letter”). Rather, the true meaning of Scripture, taken as an integrated whole, had to be grasped and elicited. In the admirable phrase of St. Hilary of Poitiers, “scripturae enim non in legendo sunt, sed in intelligendo.” The phrase was also repeated by St. Jerome. One had to grasp in advance, as it were, the true pattern of scriptural revelation, the great and comprehensive design of God’s redemptive providence (the oeconomia), and this could be done only by an insight of faith. It was by faith that the witness to Christ could be discerned in the Old Testament. It was by faith that the unity of the tetramorphic gospel could be properly ascertained.