Saint Gregory of Nazianzus was an early Roman Christian theologian and prelate who served as Archbishop of Constantinople from 380 to 381. He is known for instituting the first recorded large-scale mission from Rome, the Gregorian mission, to convert the then largely pagan Anglo-Saxons to Christianity. Gregory is also well known for his writings, which were more prolific than those of any of his predecessors as pope. He is widely considered the most accomplished rhetorical stylist of the patristic age. Gregory's most significant theological contributions arose from his defense of the doctrine of the Trinity. He is especially noted for his contributions to the field of pneumatology—that is, theology concerning the nature of the Holy Spirit. He died in 390.

The eight chapters of the document can be paired thematically: chapters one and two treat the church's nature and historical existence, chapters three and four treat different roles in the church, chapters five and six treat holiness and religious life, while chapters seven and eight discuss the saints and Mary.

 As early as the second century, this treatise, which is of great rhetorical power and force in its admonition to faithful pilgrimage under Christ's leadership, bore the title "To the Hebrews." It was assumed to be directed to Jewish Christians. Usually, Hebrews was attached in Greek manuscripts to the collection of letters by Paul. Although no author is mentioned (for there is no address), a reference to Timothy suggested connections to the circle of Paul and his assistants. Yet the exact audience, the author, and even whether Hebrews is a letter have long been disputed.