He is venerated as a saint on 26 July by the Eastern Orthodox Church.

This probably made it possible for Moses to leave Transylvania to serve the princely family in Kiev.

Between 1015 and 1018, already preparing to become a monk, he was an escort of Predslava, the daughter of Vladimir I of Kiev.

[2] Following the Polish expedition of 1018, he was carried to Poland as a prisoner and could only return in 1025.

Moses spent the rest of his life in the Kiev Cave Monastery.