Like all the apocalyptic literature preserved only in Slavonic, there is the problem of possible textual alterations made by the Bogomils, who were interested in this kind of literature, which contains some traces of the Dualistic principle typical of their beliefs. However, the dualistic principle was also a feature of Gnosticism, which was contemporaneous with the original writing of this text. The main suspected Bogomils' interpolations are 20:5.7, 22:5, 9:7, and 23:4-10, as suggested by Rubinkiewicz, but disputed by Sacchi. Scholars suspect that some other interpolations are present, including the whole of chapter 7, and some additions, whose extent is difficult to determine, in 29:3-13.