Venerable Fathers slain at Sinai and Raithu: Isaiah, Sabbas, Moses and his disciple Moses, Jeremiah, Paul, Adam, Sergius, Domnus, Proclus, Hypatius, Isaac, Macarius, Mark, Benjamin, Eusebius, Elias and others with them [their service is sung on the 13th]

This day remembers monks killed in two raids on the hermits of Mount Sinai and of Raithu, an oasis on the shore of the Red Sea. The first, in the 4th century, was described by Ammonius, an Egyptian monk who was visiting Sinai. Nomads swept through the valleys and killed the hermits they found; at Raithu, the account says, thirty-nine fathers died on 14 January and were buried together with palm branches. One of them, Domnus, a Roman by birth, lived until evening.

The second raid, in the early 5th century, was witnessed by Nilus, a former high official of Constantinople who had become a monk on Sinai with his son Theodulus. Raiders killed the monks, among them Proclus, Hypatius, Isaac, Macarius, Mark, Benjamin, Eusebius and Elias, and carried Theodulus off as a captive. Nilus later found him alive at Emesa, where the local bishop had bought his freedom.