Early Life and Monastic Formation
Niketas was born in Bithynian Caesarea, in northwest Asia Minor, to a devout family. His mother died eight days after his birth, and his father, Philaretos, embraced the monastic life. The boy was raised by his grandmother, who nurtured him in a Christian spirit, and from childhood he was devoted to church attendance.
He studied under the hermit Stephen (Stephanos), and with his blessing entered the Medikion (Mydicia) monastery under its abbot, Saint Nikephoros. After seven years of monastic life he was ordained to the priesthood around 790. When Nikephoros fell ill he entrusted the administration of the monastery to Niketas, and upon Nikephoros's death the brethren unanimously elected Niketas as their abbot.
Abbacy at Medikion
As abbot, Niketas approached leadership with humility, attending to the welfare and spiritual enlightenment of the monastery and leading by his own example. His piety and spiritual influence drew many who sought salvation, and the monastic community grew to roughly one hundred monks.
Sources relate that he was granted the gift of wonderworking, attributing to his intercessory prayer the healing of a deaf-mute child, the deliverance of two demon-possessed women, the restoration of one afflicted person's mental faculties, and the cure of numerous other ailments.
The Iconoclast Controversy and Confession
During the reign of Leo V the Armenian (813–820), iconoclasm resurged violently. A heretical council in 815 deposed the Patriarch Nikephoros and replaced him with the layman Theodotus, and the emperor summoned the monastic superiors to accept iconoclast doctrine. Niketas stood firmly for the Orthodox confession of the icons, and his faithfulness encouraged other abbots to resist; he was consequently imprisoned. He was imprisoned twice in the course of his opposition to the heresy.
According to the sources, the authorities sought to manipulate the prisoners, offering them freedom and the veneration of icons if they would receive communion from the heretical patriarch. After prolonged inner struggle and the pleas of fellow prisoners, Niketas temporarily acquiesced; but on witnessing the persecution's continuation he repented of this act and, on returning to Constantinople, publicly denounced the iconoclast heresy despite imperial threats. He endured roughly six years of imprisonment and exile until Leo the Armenian's death in 820. Among the miraculous intercessions attributed to him during this period are the release of two captives by a Phrygian ruler and the safe deliverance of three shipwrecked men cast ashore.
Final Years and Repose
After Leo's death Niketas was released, but he chose not to return to Medikion, instead retiring to an austere monastic life in a place near Constantinople. He reposed in 824 at Constantinople.
His remains were transported back to the Medikion monastery and honorably buried there, where his relics became a source of healing for those who came to venerate him.
Legacy and Commemoration
Joseph the Hymnographer composed the Canon for Saint Niketas, and his Life was written by Theosterictus, said to have been his disciple. A church dedicated to him was built on the Greek island of Lefkas (Lefkada) in the 18th century.
The Eastern Orthodox Church commemorates him on April 3 as a confessor and wonderworker.
