John Chrysostom, on Acts 13:13

“Now when Paul and they that were with him had sailed from Paphos, they came to Perge in Pamphylia. And John departing from them, returned to Jerusalem.”

“And (Paul) said not to the sorcerer, "Wilt thou not cease to pervert" the proconsul? What may be the reason of John's going back from them? For "John," it says, "departing from them returned to Jerusalem": (he does it) because they are undertaking a still longer journey: and yet he was their attendant, and as for the danger, they incurred it (not he).-Again, when they were come to Perga, they hastily passed by the other cities, for they were in haste to the metropolis, Antioch.”

Imported from an open dataset — not yet checked against the printed edition.