Confessor under Iconoclasm
The second period of Byzantine iconoclasm, reopened under Leo V the Armenian, fell heavily on the monasteries of Bithynia, and Pelekete—which had already given the Church the confessor Hilarion and, in the previous generation, the hieromartyr Theoctistus—was among the communities that resisted. Macarius was imprisoned for his defense of the icons and held until the death of Leo V.
The accession of Michael II brought his release, but not freedom: the synaxarion relates that the emperor, himself an opponent of the icons, sought to win the respected abbot over and, when Macarius held firm, sentenced him to exile on the island of Aphousia, where he ended his life. The sources differ on the precise chronology of his death—the OCA places it around 830, while another tradition extends his exile into the reign of Theophilus and dates his repose to 840.