The practice of continual prayer in
Christianity derives its origin from the
Bible in , which states: "Pray without ceasing." The
archimandrite Alexander (died about 430), the founder of the monastic
Acoemetae or "vigil-keepers", practiced continual prayer. was imported to Western Europe at
St. Maurice's Abbey in
Agaunum, where it was carried on, day and night, by several choirs, or
turmae, who succeeded each other in the recitation of the
divine office, so that prayer went on without cessation. Called the
Akoimetoi ("Sleepless Ones"), these monks prayed "a monastic round of twenty-four offices to fill every hour". The inauguration of at Agaunum was the occasion of a solemn ceremony, and of a sermon by
St. Avitus which survives. The "custom of Agaunum", as it came to be called, spread over Gaul, to Lyons, Châlons, the
Abbey of Saint Denis, to
Luxeuil,
Saint-Germain at Paris, Saint Medard at Soissons, to Saint-Riquier, and was taken up by the monks of
Remiremont Abbey and
Laon Abbey, though the Abbey of Agaunum had ceased to practice it from the beginning of the ninth century. ==Perpetual adoration==