The article is devoted to some methodological issues that arise in the linguistic and folklore analysis of the poetics of the Methodius's translation of the Song of Songs, which we consider as an orally poetic text, later elaborated in literature. The parameters of interlingual, interfaith and interethnic transmission under conditions of considerable time duration are outlined. Problems related to layers not only temporal, but also within several ethnic traditions, namely: ancient Egyptian, ancient Jewish, ancient Greek, ancient Slavic. There are a number of tropes and stylistic figures that are used as a means of organizing the text or used as components for stylistic symmetry. These are permanent epithets, different types of repetitions, anaphora and epiphora, tautological combinations, pleonastic combinations, allegories, comparisons, ekphrasis, specific composites, etc. It is possible to involve in the study of common in folklore hyperbole, personifications, paraphrases. The range of methodological difficulties is outlined. The article warns about the counterproductiveness of the study of literary tropes in isolation from the contexts of specific works, in the abstract non-ethnic continuum, although in synchrony and diachrony. If in the national literatures, especially in the early stages of their development, there are peculiar genre systems, then in folklore there are differences in genres of even related ethnic groups. Hence, the need to take into account the differences between the genres of wedding poetry in ancient Aramaic folklore and in the oral traditions of the peoples whose scribes translated the poem. The importance of a specific contextual study of the tracks of the Song of Songs is emphasized, because the movement of its texts in time and space is a change in their perceptions by translators, editors, transcribers, which leads to changes in understanding and aesthetic acceptance of the monument by readers. It is stressed that the full picture can be obtained only by examining all the national and ethnic branches of the family tree of the monument. The question of place in such a comprehensive study of religious allegorical and symbolic interpretations is also delivered in the article.