27. Claudius, fourteen years. Mark published his gospel. 5252 Nero, fourteen years. Peter and Paul are put to death. 5266 Vespasian, ten years. Jerusalem was destroyed by Titus. 5276 41. Tiberius, six years. The Lombards take Italy. 5779 Mauritius, twenty-one years. The Goths become Catholic. 5800 Phocas, eight years. The Romans are defeated by the Persians. 5808 42. Eraclius is now governing the empire in his seventeenth year. The Jews in Spain are being made Christian. The remainder of the sixth age is known to God alone. BOOKS VI-VIII THEOLOGY[309] [309] These three books are not grouped by Isidore under one name. There apparently was no name in existence by which to designate them, as _theologia_ was not applied, commonly at least, to Christian doctrine before Abelard’s time. INTRODUCTION After the five books devoted to the seven liberal arts there follow three which are grouped together by unity of subject and are sharply differentiated from the remainder of the _Etymologies_, which is prevailingly secular in tone. The contents of these three form a summary of the non-secular thought of the time.[310] Their presence in the midst of an encyclopedia of secular learning is to be explained, as we have seen, by the probability that their purpose was educational, and that they are to be regarded as the texts of the final stage in the priestly training. They thus form the conclusion of Isidore’s educational encyclopedia.[311] [310] The sources of bks. vi-viii differ from those of the remaining books of the _Etymologies_ in being almost exclusively Christian. Isidore himself, in his non-secular writings, covers more fully the subjects which he here treats in a summary fashion. Compare bk. vi, chaps. 1 and 2, with _Proemia in Libros Veteris ac Novi Testamenti_; bk. vii, chaps. 6 and 7, with _Expositiones Mysticorum Sacramentorum_ and _De Ortu et Obitu Patrum_; bk. viii, chaps. 1–5, with _Sententiarum Libri Tres_; bk. vi, chap. 19, and bk. vii, chaps. 12, 13, with _De Ecclesiasticis Officiis_. [311] See pp. 43, 86. ANALYSIS