All the saints salute you, chiefly they that are of Caesar's household. All the saints - All the Christians now at Rome.
They that are of Caesar's household - Nero was at this time emperor of Rome: a more worthless, cruel, and diabolic wretch never disgraced the name or form of man; yet in his family there were Christians: but whether this relates to the members of the imperial family, or to guards, or courtiers, or to servants, we cannot tell. If even some of his slaves were converted to Christianity, it would he sufficiently marvellous. Converts to Christianity in this family there certainly were; and this shows how powerfully the Divine word had been preached and spread. That the Empress Poppaea may have been favourably inclined to Christianity is possible; for Josephus relates of her, Antiq., lib. xx. cap. 7: Θεοσεβης γαρ ην· She was a worshipper of the true God; it is not likely, therefore, that she threw any hinderances in the way of her servants who might wish to embrace the Christian faith. St. Jerome, in Philemon, states that St. Paul had converted many in Caesar's family; A Caesare missus in carcerem, notior familiae ejus factus, persecutoris Christi domum fecit ecclesiam.
"Being by the emperor cast into prison, he became the more known to his family, and he turned the house of Christ's persecutor into a church." Some imagine that Seneca, the preceptor of Nero and the poet Lucan, were converted by St. Paul; and there are still extant, and in a MS. now before me, letters which profess to have passed between Paul and Seneca; but they are worthy of neither. They have been printed in some editions of Seneca's works. See the remarks below.