Eusebius of Caesarea

In his own words on Galatians

• Galatians 1:19

  Then James, whom the ancients surnamed the Just on account of the excellence of his virtue, is recorded to have been the first to be made bishop of the church of Jerusalem. This James was called the brother of the Lord because he was known as a son of Joseph, and Joseph was supposed to be the father of Christ, because the Virgin, being betrothed to him, "was found with child by the Holy Ghost before they came together," as the account of the holy Gospels shows. But Clement in the sixth book of his Hypotyposes writes thus: "For they say that Peter and James and John after the ascension of our Saviour, as if also preferred by our Lord, strove not after honor, but chose James the Just bishop of Jerusalem." But the same writer, in the seventh book of the same work, relates also the following things concerning him: "The Lord after his resurrection imparted knowledge to James the Just and to John and Peter, and they imparted it to the rest of the apostles, and the rest of the apostles to the seventy, of whom Barnabas was one. But there were two Jameses: one called the Just, who was thrown from the pinnacle of the temple and was beaten to death with a club by a fuller, and another who was beheaded." Paul also makes mention of the same James the Just, where he writes, "Other of the apostles saw I none, save James the Lord's brother."

  Church History (Book II), Chapter 1, Sections 2-4