1. To be precise, the Enarrationes in psalmos 1–32 consist of short glosses which read like a series of pious meditations. Eight of them (18; 21; 25; 26; 29–32) have, however, two Enarrationes each, the one consisting of glosses, the other of one or several sermons. The Enarrationes to the remaining psalms are almost exclusively sermons, the exception being the interpretation of psalms 67, 71, 77, 78, 81, 82, 87, 89, 104–108, 135, and 150. The Enarrationes to these latter psalms consist again of glosses. Cf. Bardenhewer, op. cit. IV (1924) 484.
2. This paraphrase shows some similarity in thought to the text on Ps. 90.6b, found on fol. 237v of Cod. Paris. Coislin. gr. 275. The latter reads: ἀπò συμπτώματος καὶ δαμιονίου μεσημβϱινοῦ : σύμπτωμα καλεῖ τὴν ἐκ τοῦ συμβάντος ἐπιβουλὴν ἢ πληγήν · οἷον καὶ ὁ Σολομών φησι · τοῖς πᾶσι συνάντημα ἓν · δαιμόνιον δὲ μεσημβϱινòν καλεὶ βλάβην ἓνδη-λον καὶ φανεϱάν · θέλων οὖν εἰπεῖν ὃτι καὶ ἀπò τῶν συμβαινόντων χαλεπῶν καὶ ἀπò τῶν ἀφανῶν καὶ τῶν ἐκ τοῦ πϱοφανοῦς ἐπεϱχομένων ἀπαλ<λ>άσσει σε ὁ Θεòς εἰ ἐπ’ αὐτῷ πέποιθας · ταῦτά ψησιν.
3. The second and somewhat fuller version (Sancti Hieronymi presbyteri tractatus sive homiliae in psalmos, in Marci evengelium aliaque alia argumenta, ed. Morin G. [Anecd. Maredsol. 3.2; 1897] 115–117) describes the deceptive method of the heretics in greater detail. Noon, being the hour of the day when light and heat are strongest, symbolizes the perfect understanding of things divine and the virtue of charity. Seeing the Christians in possession of both, the devil transforms himself into an angel of light, promising to men the same abundance of knowledge and virtue. The devil's instruments in this scheme are the heretics: ‘When the heretics give some mysteriously sounding promises concerning the kingdom of heaven, concerning chastity and fasts and holiness and renunciation of the world, they are promising the [light of] noonday. Yet, because it is not the light of Christ, it is not the [true light of] noonday, but the devil of noonday.’ — A text almost identical with that of the second version is found in the Breviarium in psalmos (PL 26.1164f.), a spurious compilation which contains, however, a great number of genuine Hieronymian elements from the Commentarioli and the Tractates sive homiliae on the Psalms. Following St. Jerome's interpretation, medieval mystical writers give the name of daemonium meridianum to the spirit of temptation, coming in the guise of an angel of light. See, for instance, St. Bernard of Clairvaux, In psalmum 90 (‘ Qui habitat’) 6.6 (PL 183.199) and Sermones in cantica canticorum 33.9 (PL 183.955f.); Exordium magnum ordinis Cisterciensis 5.12 (PL 185.1152); Richard of St. Victor, Adnotationes mysticae in psalmos, in ps. 90 (PL 196.394f.); Hugh of St. Cher, In psalterium, in ps. 90 (Opera omnia in universum Vetus et Novum Testamentum 2 [Venetiis 1703] 241v).
4. See, for instance, Van der Meer, Augustinus (n. 20 supra) 74–85; 543–575.