 With regards to the supposed lost common source (Ω-BAS) of Byzantine group of versions, Engberding (1931) as well as following scholars as Gabriele Winkler (2005) suggest that the ancient Armenian version (the Liturgy of Saint Gregory the Illuminator) is the one which has better preserved the readings of Ω-BAS.Gabriele Winkler underlined also direct Syrian influences on this text.On regards the relation between the Byzantine and the Egyptions groups of versions, there is no a clear consensus among scholars