Eusebius of Caesarea was a Christian bishop, scholar, and historian who lived during the late Roman Empire, from approximately 260 to 340 CE. He served as the bishop of Caesarea in Palestine and lived through the pivotal transition from the persecution of Christians under Emperor Diocletian to the religion's official acceptance under Emperor Constantine I. Eusebius was a student of the scholar Pamphilus and was deeply influenced by the theological traditions of Origen. He participated in the important Council of Nicaea in 325 CE, where he initially supported but later expressed cautious reservations about the adopted creed.
His extensive writings established the foundation for church history. His most famous work, the Ecclesiastical History, chronicles the story of Christianity from its origins to his own time, creating a model for understanding history as the unfolding of divine purpose. He also wrote a universal timeline, the Chronicle, and a flattering biography of Emperor Constantine. Many of his other works were defenses of the Christian faith, such as Preparation for the Gospel and Demonstration of the Gospel, which quoted extensively from Greek philosophers and historians. According to modern scholars, these apologetic works were crucial for preserving fragments of many ancient texts that would otherwise be lost.
Eusebius is often called the "Father of Church History." His historical framework was adopted by later chroniclers, and his close association with Constantine provides a vital contemporary view of the Roman Empire's Christianization. His legacy is that of a foundational figure who shaped how the early church recorded and understood its own past and its relationship with classical culture and imperial power.
Available Works
Κατὰ Ἱεροκλέους
Against Hierocles
43 passages
των κατά Μαρκέλλου
Against Marcellus
10 passages
Συλλογὴ Ἀρχαίων Μαρτυρίων, Ἀποσπάσματα
Collection of Ancient Martyrdoms, Fragments
12 passages
Ὑπόμνημα εἰς Ἠσαΐαν
Commentary-Isaiah
380 passages
Ὑπόμνημα εἰς τοὺς Ψαλμούς
Commentary-Psalms
1347 passages
Ἐκκλησιαστικὴ ἱστορία
Ecclesiastical History
256 passages
Λόγος Κωνσταντίνου τοῦ Αὐτοκράτορος πρὸς τὴν
Emperor Constantine's Speech to Assembly of Saints
132 passages
Εὐσεβίου Ἔργα
Eusebius Works
8 passages
Εὐσεβίου Ἔργα, Περὶ Ἐγκωμίων Κωνσταντίνου
Eusebius Works
139 passages
Ἐπίδειξις Εὐαγγελική
Evangelical Demonstration
135 passages
Ἐπίδειξις Εὐαγγελική, Ἀποσπάσματα Βιβλίου ΙΕʹ
Evangelical Demonstration Fragments of Book XV
4 passages
Ἀποσπάσματα περὶ Δανιήλ
Fragments-Daniel
2 passages
Ἀποσπάσματα περὶ Ἑβραίων
Fragments-Hebrews
2 passages
Ἀποσπάσματα περὶ Λουκᾶ
Fragments-Luke
64 passages
Ἀποσπάσματα περὶ Παροιμιῶν
Fragments-Proverbs
2 passages
Γενικὴ Στοιχειώδης Εἰσαγωγή
General Elementary Introduction
235 passages
Γενικὴ Στοιχειώδης Εἰσαγωγή, Ἀποσπάσματα
General Elementary Introduction Fragments
4 passages
Εὐαγγελικὰ Ζητήματα πρὸς Μαρῖνον
Gospel Questions to Marinus
15 passages
Εὐαγγελικὰ Ζητήματα πρὸς Στέφανον
Gospel Questions to Stephanus
39 passages
Ἐπιστολὴ πρὸς Ἀλέξανδρον Ἀλεξανδρείας
Letter to Alexander of Alexandria
1 passages
Ἐπιστολὴ πρὸς Καισαρείς
Letter to Caesareans
13 passages
Ἐπιστολὴ πρὸς Καρπιανὸν, Πρόλογος Εὐαγγελικῶν
Letter to Carpianus, Preface to Gospel Canons
2 passages
Ἐπιστολὴ πρὸς Κωνσταντίαν Αὐγούστην
Letter to Constantia Augusta
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Ἐπιστολὴ πρὸς Εὐφράτιον
Letter to Euphration
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Ἐπιστολὴ πρὸς Φλάκιλλον
Letter to Flacillus
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Ὀνομαστικόν
Lexicon of Names
88 passages
Βίος Κωνσταντίνου
Life of Constantine
270 passages
Μικραὶ Προσθῆκαι εἰς Ζητήματα πρὸς Μαρῖνον
Minor Supplements to Questions to Marinus
6 passages
περὶ τῆς ἐκκλησιαστικῆς θεολογίας
On Ecclesiastical Theology
22 passages
Περὶ Μέτρων καὶ Σταθμῶν, Ἀποσπάσματα
On Measurements and Weights, Fragments
11 passages
Περὶ τῶν Βίων τῶν Προφητῶν, Ἀποσπάσματα
On the Lives of the Prophets, Fragments
10 passages
Περὶ τῶν Μαρτύρων τῆς Παλαιστίνης, Μακρότερον
On the Martyrs of Palestine, Longer Version
31 passages
Περὶ τῶν Μαρτύρων τῆς Παλαιστίνης, Συντομώτερον
On the Martyrs of Palestine, Shorter Version
69 passages
Περὶ τῆς Ἑορτῆς τοῦ Πάσχα
On the Solemnity of Easter
11 passages
Περὶ Θεοφανείας
On Theophany
25 passages
Πάθος τῶν Δέκα Αἰγυπτίων Μαρτύρων, Ἀποσπάσματα
Passion of the Ten Egyptian Martyrs, Fragments
2 passages
Προσθῆκαι εἰς Ζητήματα πρὸς Μαρῖνον
Supplements to Questions to Marinus
22 passages
Προσθῆκαι εἰς Ζητήματα πρὸς Στέφανον
Supplements to Questions to Stephanus
15 passages
Εὐσεβίου Καισαρείας Ἔργα, Προπαρασκευή Εὐαγγελική
Works of Eusebius of Caesarea
3644 passages