Venerable Anastasios the Sinaite, abbot of Mount Sinai and defender of the faith.
Anastasios was a monk and later abbot of the Monastery of Saint Catherine on Mount Sinai in the seventh century. He travelled widely in Egypt and Syria disputing with heretics and wrote works of theology and spiritual guidance.
He reposed in peace at an advanced age.
Feast day
On the New Calendar, Anastasios the Sinaite is commemorated on April 21. Churches on the Old (Julian) Calendar keep the feast on May 4 of the civil calendar.
Also commemorated on April 21

Anastasios of Antioch
Hierarch, Αναστάσιος
Patriarch of Antioch.
Name days: Tasos, Tassos, Anastasios, Anastasius
Januarius of Benevento and his companions
Hierarch, Ιανουάριος ο Ιερομάρτυς
Hieromartyr Januarius, Bishop of Benevento, with the deacons Proculus, Sosius and Faustus and their companions.
Alexandra the Empress
Holy Woman, Αλεξάνδρα η Βασίλισσα
Holy Martyr Alexandra the Empress, who confessed Christ at the martyrdom of Saint George, with her servants Apollo, Isaacius and Codratus.
Maximian of Constantinople
Hierarch, Μαξιμιανός Πατριάρχης Κωνσταντινουπόλεως
Saint Maximian, Patriarch of Constantinople, successor of the deposed Nestorius.