10. These things he wrote from the above-mentioned city to the churches referred to. And when he had left Smyrna he wrote again from Troas to the Philadelphians and to the church of Smyrna; and particularly to Polycarp, who presided over the latter church. And since he knew him well as an apostolic man, he commended to him, like a true and good shepherd, the flock at Antioch, and besought him to care diligently for it.