The Book of Ruth was translated in the early stage of the Slavic literacy. The Life of St Methodius says that the whole Bible was translated into the language of Slavs (Old Church Slavonic) during his life (9th century). Over the time, the difference among Slavic dialects was increased and every group modified Old Church Slavonic according to its own language sense. That is how the Serbian ’version’ of Old Church Slavonic language was developed. There are four Serbian manuscripts containing The Book of Ruth. They were made in the 15th and 16th century. The aim of this paper is to make a comparison between the Medieval Serbian text and the Greek versions. The most important translation solutions are discussed as well as the significant differences between the Serbian version and the Greek original.