steve-b:
BTW, This is why I ask for references properly referenced .
I had never heard/read Calvins saying that Eusebius claimed that James was the Bishop of the Apostles. The only reason I can think that Calvin might make that claim is that James was chosen by the Peter, John and James (the apostle) to be the Bishop of Jerusalem.
From the link you gave
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.
Also in Book VII Chapter 19
The chair of James, who first received the episcopate of the church at Jerusalem from the Saviour himself and the apostles and who, as the divine records show, was called a brother of Christ
Eusebius seems to indicate that James the Just was chosen by Christ and the Apostles to be the Bishop of Jerusalem. If he was chosen by the Apostles wouldn’t that make James the Bishop of the Apostles?
I’m not necessarily defending Calvin. I’m just pointing out that it isn’t that great a leap in logic.