A Hymn Credited with Saving a City

The prologue stanza, often called the Kontakion and beginning with words of thanksgiving to a victorious defender, is traditionally connected by Byzantine sources to the deliverance of Constantinople from a siege, most commonly identified with the combined Avar and Persian siege of 626 CE, which Byzantine chroniclers credited to the intercession of the Theotokos rather than to the city's own defenses or the emperor's absent army. Some later scholarly discussion has associated the prologue instead with a different siege, since Constantinople faced several serious threats across the seventh and eighth centuries and Byzantine commemorative tradition was not always precise about which specific deliverance a given thanksgiving text was first composed to mark, so the exact historical event behind the prologue, though clearly a real military crisis of some kind, is not established with complete certainty.

Authorship of the main body of the hymn is similarly unsettled: the traditional ascription to Romanos the Melodist, the great sixth century composer of Byzantine liturgical poetry, is widely repeated but disputed by scholars who note the hymn's alphabetical acrostic structure and certain stylistic features differ from Romanos's securely attributed work, with alternative candidates including the patriarch Sergius, who was active during the 626 siege itself, having been proposed instead. No consensus has settled the question, and the hymn is accordingly often described in scholarly literature as anonymous or of disputed authorship rather than confidently assigned to any one named poet.