The seventh Sunday after Easter is dedicated to the 318 Holy Fathers who participated in the First Ecumenical Council. The council was convened in 325 in the city of Nicaea (now Iznik, east of Bursa, Turkey) to oppose the heresy of Arius (Arianism). Among the prominent participants in it are the bishops - Alexander of Alexandria, Athanasius the Great, Eustathius of Antioch, Macarius of Jerusalem, Paphnutius, Spyridon, Nicholas and others. The Fathers of the Council formulated important concepts of Orthodox Christian teaching, especially those referring to the second person of the Holy Trinity, the Son of God, incarnate in the God-man Jesus Christ. The first seven articles of the Creed, the summary of faith, are also compiled.

Saint Nikita was a well-educated cleric known for his virtues. Later he became bishop of the city of Chalcedon (now Kadikoy on the Asian side of Istanbul) and led his flock with a personal example of perfect life and tireless kindness among hardworking people who needed comfort, protection and help. Because of the protection of icon veneration and the denunciation of the iconoclast emperor Leo the Armenian, Bishop Nikita was sent into exile, where he died.

Priest Stefan from the village of Penkyovtsi, Tran, lived in the XV-XVI centuries. Due to Turkish violence, he fled first to Sofia and then to Wallachia. There his wife died and he adopted monasticism by the name Sophronius. He returned on this side of the Danube and lived in a monastery near Rousse (probably the cave Basarbovo Monastery), where he worked with fasting, prayer and charity. A few years after his death, monks found his body incorruptible and placed him in a chest for worship. His life was written by the Bulgarian writer priest Peyu, author of the life of St. George of Sofia Novi (suffered in 1515).