The Helmeted Prologue

Also known as
Prologus Galeatus, Praefatio in Libros Samuelis et Malachim, Preface to the Books of Samuel and Kings
Author
St. Jerome

Jerome's preface to his translation of Samuel and Kings, which serves as a general introduction to the Hebrew canon. It establishes the twenty-two books of the Hebrew Bible corresponding to the twenty-two letters of the Hebrew alphabet, distinguishes canonical from apocryphal books, and defends Jerome's translation work.

Pope Clement VIII, Jerome's Prefaces, On Worship

Preface and Praise of Sacred Scripture

Commentary on the Pentateuch of Moses