Fragments of Clemens Alexandrinus · Eusebius: Ecclesiastical History, Book VI. II. 1.

Now Clement, writing in the sixth book of the Hypotyposes, makes this statement. For he says that Peter and James and John, after the Saviour’s ascension, though pre-eminently honoured by the Lord, did not contend for glory, but made James the Just, bishop of Jerusalem.