The synaxarion of Pope Gregory I in the manuscript Sinai Gr. 548 (10th c.), f. 142r, https://www.loc.gov/resource/amedmonastery.00279380745-ms/?sp=145&st=single (Washington, Library of Congress) Pope Gregory I of Rome (590–604) is known in the Christian East primarily for associating his name with the Liturgy of the presanctified gifts. During Lent, this particular liturgy is celebrated on weekdays, from Monday to Friday. Improperly called a liturgy, it actually takes place

Emperor Theophilos and his court, as depicted in the manuscript Madrid, Gr. Vitr. 26-2, 12th c. (Chronicle of Skylitzes), f. 42v, https://commons.wikimedia.org/wiki/File:Emperor_Theophilos_and_his_court,_Skylitzes_Chronicle.jpg# In the Byzantine tradition, the first Sunday of Lent is called the Sunday of Orthodoxy. It evokes a historical moment known as the Triumph of Orthodoxy, i.e., the definitive recognition of the cult of images in the Byzantine Empire. The event occurred