Nicholas Cabasilas' Commentary on the Divine Liturgy is a remarkable product of Byzantium's last great flowering of theology. The work has long been essential reading for specialists in the fields of comparative liturgy and history of liturgy, since Cabasilas comments in detail on the Byzantine rite of his day and is able to draw comparisons with the Roman liturgy as well. The work is also invaluable for all those who wish to understand more about the theory and practice of worship in the Orthodox Church.