Venerable John of Damascus, theologian, hymnographer and defender of the holy icons.
Venerable John was born in Damascus in the seventh century to a Christian family in the service of the caliph. Leaving the world, he became a monk of the Lavra of St. Sabas near Jerusalem, where he wrote his great works in defence of the holy icons and his summary of the Orthodox faith.
He is also one of the Church's greatest hymnographers, author of the Paschal canon and of many hymns still sung today. He reposed in peace in the eighth century.
Feast day
On the New Calendar, John of Damascus is commemorated on December 4. Churches on the Old (Julian) Calendar keep the feast on December 17 of the civil calendar.
Who celebrates a name day
People with these names keep their name day on this feast:
Also commemorated on December 4

Seraphim of Phanarion
Hierarch, Σεραφείμ Φαναρίου
Hieromartyr Seraphim, Archbishop of Phanarion and Neochorion in Thessaly.
Juliana of Heliopolis
Holy Woman, Ιουλιανή
Holy Martyr Juliana, who suffered together with Saint Barbara.
John of Polybotum
Hierarch, Ιωάννης Πολυβότου
John the Wonderworker, Bishop of Polybotum in Phrygia, confessor of the holy icons.
Christodoulos and Christodouli
Martyr, Χριστόδουλος και Χριστοδούλη
Holy Martyrs Christodoulos and Christodouli the Virgin.