Pick, Bernhard. "Chapter Five: Matthias - Traditions." Paralipomena: Remains of Gospels and Sayings of Christ. Chicago: Open Court Publishing Company, 1908, 24-27.
Three works are connected with Matthias, the replacement apostle selected in Acts chapter one. They are "a gospel mentioned only by Origen (and Eusebius), παραδόσεις Ματθίου, quoted by Clement of Alexandria, and finally λόγοι ἀπόκρυφοι, private instructions of Jesus given to the apostle, to which Basilides referred according to the Philosophumena" (Pick 1908, 24). Hippolytus, in the Philosophoumena, speaks of the material as Aristotelian deception and heresy. Clement of Alexandria speaks of the heretics claiming to promote the views of Matthias (Pick 1908, 25). He provides a few brief quotations which suggest a pietism resulting in persuasion of others through good works. It is by obedience that the Christian is justified (Pick 1908, 26).