The Church
No institution outlasted the tsars more completely than the church. This section follows it from the archbishopric of the Asen brothers, through the union with Rome and the patriarchate recognised at Lampsakos in 1235, to the heresies it condemned, the hesychast renewal that remade its monasteries, and the estates and charters that made it a power in its own right.
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Religion and the Church
Religion was inseparable from political authority in the Second Bulgarian Empire: the restored tsardom required a church of its own, while coronation, patronage and sacred ceremony presented the ruler as the protector of an Orthodox Christian people. The initially unrecognized archbishopric of Trnovo passed through a formal union with Rome in 1204 before entering canonical communion with the Orthodox East and receiving recognized patriarchal and autocephalous status in 1235. Bishops, parish clergy and especially monasteries sustained worship, education, literature and the cult of saints, while rulers and church councils repeatedly acted against teachings classified as heretical. In the fourteenth century hesychasm and the Trnovo literary school produced a remarkable spiritual renewal, culminating in the patriarchate of Euthymius on the eve of the Ottoman capture of Trnovo in 1393.
The Patriarchate of Tarnovo
The Patriarchate of Tarnovo emerged from the effort of the Second Bulgarian Empire to restore the political and ecclesiastical order that had existed before the Byzantine conquest. Initially separated unilaterally from the autonomous archbishopric of Ohrid, the Bulgarian Church sought legitimacy first through union with Rome and then through reconciliation with the Orthodox patriarchate established at Nicaea. Its recognition as an autocephalous patriarchate at Lampsakos in 1235 made it a central institution of the Bulgarian tsardom, with authority over a hierarchy of metropolitans, bishops, courts, monasteries, and endowed ecclesiastical property. Although its jurisdiction was weakened by political fragmentation and renewed Constantinopolitan intervention, the patriarchate remained a major spiritual and cultural power until the Ottoman capture of Tarnovo in 1393.
Bogomilism and the Heresies
Bogomilism was the most enduring dualist challenge to the religious order of medieval Bulgaria, although its actual strength in the Second Bulgarian Empire was often smaller than the rhetoric of its opponents suggested. It rejected the material and sacramental foundations of Orthodox Christianity, replacing the authority of bishops, priests, icons and rites with its own communities, teachers and ascetic elite. Tsar Boril’s council at Trnovo in 1211 established the principal model for suppressing it: cooperation between ruler, hierarchy and political elite, followed by condemnation, punishment and liturgical commemoration in the Synodikon. In the fourteenth century the struggle broadened to encompass Barlaamites, Adamites and Judaizers and became closely connected with hesychasm, the religious authority of Tsar Ivan Alexander, the teaching of Theodosius of Trnovo and the reforming patriarchate of Euthymius.
Hesychasm and Monasticism
Fourteenth-century Bulgarian monasticism was transformed by hesychasm, a disciplined pursuit of inner stillness, unceasing prayer, and contemplation of the divine light. The movement entered Bulgaria through both Mount Athos and Gregory of Sinai’s community at Paroria, receiving decisive material support from Tsar Ivan Alexander. Under Theodosius of Trnovo, Kilifarevo became a nursery of ascetics, translators, churchmen, and opponents of heresy, while Euthymius of Trnovo carried its principles into patriarchal government and literary reform. Through mobile monks and ecclesiastical leaders such as Romylos of Vidin, Ephrem, Cyprian Tsamblak, and Gregory Tsamblak, the Bulgarian synthesis of hesychasm, monastic discipline, and corrected Slavonic learning spread into the wider Orthodox Slavic world.
Monasteries and Charters
In the Second Bulgarian Empire, monasteries were not merely places of worship but durable institutions that owned land, governed dependent populations, managed agricultural production, and enjoyed privileges granted by rulers. Their principal legal foundation was the chrysobull, a solemn gold-sealed charter that could confirm estates, villages, fiscal exemptions, service immunities, and jurisdictional rights. Patronage joined material and political interests: tsars and boyars endowed monasteries, while monastic communities commemorated their benefactors, strengthened dynastic legitimacy, and preserved the public memory of rulership. The surviving charters consequently illuminate not only monastic history but also the administration, taxation, landholding, and social hierarchy of medieval Bulgaria.