She who is in Babylon, chosen together with you, greets you; and so does Mark, my son.
    According to historical evidence, Peter was in Rome during the final years of his life. “Babylon” here might be a disguised reference to Rome, used in order to protect both the Roman church and Peter from the Neronian persecution. (Others suggest, however, that he wrote from the literal city of Babylon on the Euphrates River.) - BKC