Ecclesiastical History (Eusebius)

Eusebius had access to the Theological Library of Caesarea and made use of many ecclesiastical monuments and documents, acts of the martyrs, letters, extracts from earlier Christian writings, lists of bishops, and similar sources, often quoting the originals at great length so that his work contains materials not elsewhere preserved.

[5] In its present form, the work was brought to a conclusion before the death of Crispus (July 326), and, since book x is dedicated to Paulinus, Archbishop of Tyre, who died before 325, at the end of 323 or in 324.

… that from that time seditions and wars and mischievous plots followed each other in quick succession, and never ceased in the city and in all Judea until finally the siege of Vespasian overwhelmed them.

But when on account of the abundant freedom, we fell into laxity and sloth, and envied and reviled each other, and were almost, as it were, taking up arms against one another, rulers assailing rulers with words like spears, and people forming parties against people, and monstrous hypocrisy and dissimulation rising to the greatest height of wickedness, the divine judgment with forbearance, as is its pleasure, while the multitudes yet continued to assemble, gently and moderately harassed the episcopacy.

In the 5th century, the Christian historian Socrates Scholasticus described Eusebius as writing for "rhetorical finish" in his Vita Constantini ("Life of Constantine") and for the "praises of the Emperor" rather than the "accurate statement of facts.

"[9] Ramsay MacMullen in the 20th century regarded Eusebius's work as representative of early Christian historical accounts in which "Hostile writings and discarded views were not recopied or passed on, or they were actively suppressed... matters discreditable to the faith were to be consigned to silence.

"[10] As a consequence this kind of methodology in MacMullen's view has distorted modern attempts, (e.g. Harnack, Nock, and Gustave Bardy), to describe how the Church grew in the early centuries.