John Chrysostom (c. 347 – 14 September 407), was an important Early Church Fatherwho served as Archbishop of Constantinople. He is known for his  preaching and public speaking, his denunciation of abuse of authority by both ecclesiastical and political leaders, the Divine Liturgy of Saint John Chrysostom, and his ascetic sensibilities. The epithet Χρυσόστομος(Chrysostomos, anglicized as Chrysostom) means "golden-mouthed" in Greek and denotes his celebrated eloquence. Chrysostom was among the most prolific authors in the early Christian Church, exceeded only by Augustine of Hippo in the quantity of his surviving writings.

In the Roman Catholic Church he is recognized as a Doctor of the Church. 

Source:  https://en.wikipedia.org/wiki/John_Chrysostom

St. John Chrysostom - c. 400 A.D. Homilies on the Gospel of MatthewSt. John Chrysostom - c. 400 A.D. Homilies on the Gospel of John St. John Chrysostom - c. 400 A.D. Homilies on the Acts of the Apostles St. John Chrysostom - c. 400 A.D. Homilies on Romans St. John Chrysostom - c. 400 A.D. Homilies on First Corinthians St. John Chrysostom - c. 400 A.D. Homilies on Second Corinthians St. John Chrysostom - c. 400 A.D. Homilies on Ephesians St. John Chrysostom -- c. 400 A.D. Homilies on PhilipiansSt. John Chrysostom - c. 400 A.D. Homilies on Hebrews  St. John Chrysostom - c. 400 A.D. Homilies on Colossians St. John Chrysostom - c. 400 A.D. Homilies on First Thessalonians St. John Chrysostom - c. 400 A.D. Homilies on Second Thessalonians St. John Chrysostom - c. 400 A.D. Homilies on First Timothy St. John Chrysostom - c. 400 A.D. Homilies on Second Timothy St. John Chrysostom - c. 400 A.D. Homilies on Titus St. John Chrysostom - c. 400 A.D. Homilies on Philemon St. John Chrysostom - c. 400 A.D. Commentaries on GalatiansSt. John Chrysostom - c. 400 A.D. Instructions to Catechumens 

St. John Chrysostom  -  c. 390 A.D.       On the Priesthood