The subject of analysis are two biblical commentaries to the Book of the prophet Zechariah. First commentary is written by Didymus of Alexandria. The second is the fruit of saint Jerome’s thought, prince of exegetes. Analysis of these two comments leads us to the conclusion of a very high resemblance of these works. Numerous fragments of a saint Jerome’s comment are convergent with those written by Didymus or are complementary to his interpretation. We get the impression, that Didymus determines the way, after which Jerome goes. Honestly speaking, despite some borrowings from Didymus, Jerome maintains a certain independence even in appreciation of literal interpretation of Scripture. Moreover, in many places he uses philological explanations or just supplements Didymus. We cannot forget, that Jerome asked Dydimus to write this commentary to the Zechariah prophet, and probably that’s why he allowed himself to use it, as he wished to.