The Evangelical Harmony, or Harmony of the Gospels, were the title of works written with a view to prove the substantial agreement of the four evangelists. The hereticTatian composed in the second century the Diatessaron, the first work of this kind, a continuous narrative of the events written in the gospels. From this harmony all passages were omitted which favoured the doctrine of the real humanity of Christ, and hence told against the peculiar doctrines of Tatian. Theophilus of Antioch is said to have composed a book of a similar kind, and Ammonius Saccas executed another Diatessaron, with the corresponding passages arranged in parallel columns. The Ten Indexes of Eusebius probably appeared in the first half of the fourth century, and was more complete than its predecessors. Research Evangelical Harmony
Berosus was a priest of the temple of Belus at Babylon early in the third century BC. He wrote in Greek a history of the Babylonian Chaldeans founded on the ancient archives of the temple of Belus. It is known only by the quotations from it in Apollodorus, Eusebius, Josephus, etc. Research Berosus
Eusebius, regarded as the father of ecclesiastical history, was a Greek writer. He was born in about 265 at Palestine and died about 340. About 315 he was appointed Bishop of Caesarea. He became an advocate of the Arians and condemned the doctrines of Athanasius. His ecclesiastical history extends from the birth of Christ to 324. Amongst his other extant works is a life of Constantine the Great. Research Eusebius
The Homoiousians were a sect of Arians, followers of Eusebius, who maintained that the nature of Christ is not the same with, but only similar to that of the Father, as distinguished from the Homoousians, who maintained that he was of the same nature. Research Homoiousians
 
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