Hesychasm's practice traces back to the informal spiritual direction of the Egyptian desert, but its distinct identity and vocabulary developed later, within Byzantine monasticism and above all on Mount Athos, where by the eleventh century a recognizable hesychast tradition, cultivating silence and repeated prayer under an elder's guidance, was well established. That tradition faced its sharpest test in the fourteenth century, when Barlaam of Calabria, a Greek scholar trained partly in Western scholastic method, criticized hesychast claims of experiencing divine light as theologically confused and practically superstitious; Gregory Palamas's defense, developed through the 1330s and 1340s and eventually endorsed by Orthodox church councils, secured hesychasm's doctrinal legitimacy and shaped Eastern Orthodox theology on the nature of religious experience more broadly. The tradition's writings, scattered across many authors and centuries, were gathered into a single, highly influential anthology, the Philokalia, compiled on Mount Athos by Nikodimos of the Holy Mountain and Makarios of Corinth and published in Venice in 1782, spanning source texts from the fourth to the fifteenth century.
The Philokalia's translation into Slavonic and later Russian in the eighteenth and nineteenth centuries carried hesychast practice deep into Russian Orthodox monastic and lay spirituality, and the tradition remains actively practised today within Eastern Orthodox monasticism, particularly though not exclusively on Mount Athos itself, generally still understood as requiring the guidance of an experienced spiritual father rather than independent practice from written sources alone.