The Holy Fathers at Mount Sinai lived in the wilderness around the holy mountain before the Emperor Justinian built the famous Monastery there in 527. The brethren were attacked by a band of Saracen barbarians who massacred Doulas, the superior of the community, and most of the other monks. They only stopped when a pillar of fire rose to the sky from the summit of Sinai, causing them to flee in fear.

The Forty-three Holy Fathers at Raithu were massacred on December 22, but are commemorated together with the fathers of Sinai. They lived the monastic life on the shores of the Red Sea. One day about three hundred Ethiopian barbarians raided the area, killing many Christians and enslaving their wives and children. They attacked the church at Raithu, where forty-three fathers had taken shelter. Their abbot Paul enjoined them to persist in prayer to the end, putting no stock in the passing life of this world, which they had renounced when they came to the desert. No sooner had he finished his prayer than the barbarians broke in, slaughtering all the monks but one, who escaped to bring news of the attack to Mt Sinai. When the barbarians returned to their ships they found that the Christians had run their vessels onto the rocks. Enraged, they killed all their prisoners. They themselves were massacred by a band of armed Christians who arrived soon afterward.