This Homily was delivered on the occasion of the Prefect entering the Church, for the purpose of pacifying the minds of the people, in consequence of a rumour of an intended sack having been announced to him, when all were meditating flight. It treats also on the subject of avoiding oaths, and on the words of the Apostle, “Paul, a prisoner of Jesus Christ.”
Source: Homilies on the Statues (New Advent)