حرب الأيقونات
While the formations of the Divine Liturgy in the 6th and 7th centuries preceded the beginnings of the period of Byzantine Iconoclasm, it was perhaps during the 11th century that the Theotokia became part of the liturgical books of the Eastern Church. As of the 12th century an increasing number of diataxeis, giving the order of the liturgy included Marian hymns.