In a letter written as the preface to his commentary on Genesis, addressed to Acca, bishop of Hexham (709–31), Bede listed the authors who had preceded him in commenting on the first book of the Old Testament – Basil, Ambrose, Augustine – and he observed of their writings:

In these words we can glimpse not only Bede’s idea of his own calling – as one of the very learned, with the skill to assimilate difficult and diffuse material and pass on its import to those less fortunate – but also his sense of privilege as a beneficiary of the wealth that brought so many books his way, creating a scholar’s paradise, as he saw it. Closer examination of his commentary on Genesis shows that the works mentioned in that letter to Acca were known to Bede not merely by reputation, but that copies of them lay open before him. Basil’s commentary in the translation from the Greek by Eustathius, Ambrose’s Hexaemeron, and several relevant works by Augustine (primarily his De Genesi ad litteram but also De Genesi contra Manichaeos, his Confessiones, and the treatise Contra adversarium legis et prophetarum) are just the authors and books which Bede himself named in describing his sources.