The title Commentary on the Epistle to the Galatians, and Homilies on the Epistle to the Ephesians refers to works by St. John Chrysostom, a 4th-century Church Father, offering deep exegetical insights into Paul's letters, focusing on salvation by faith (Galatians) versus Christ's union with the Church (Ephesians) and practical Christian living, delivered as sermons in Antioch, valuable for understanding early Christian theology and ethics.