I. The Churchmen of Rome are in danger of forgetting past judgments and mercies, and becoming ungrateful to God
The fewness of those who were present has of itself shown, dearly-beloved, that the religious devotion wherewith, in commemoration of the day of our chastisement and release, the whole body of the faithful used to flock together in order to give God thanks, has on this last occasion been almost entirely neglected: and this has caused me much sadness of heart and great fear. For there is much danger of men becoming ungrateful to God, and through forgetfulness of His benefits not feeling sorrow for the chastisement, nor joy for the liberation.
Accordingly I fear, dearly-beloved, lest that utterance of the Prophet be addressed in rebuke to such men, which says, “you have scourged them and they have not grieved: you have chastised them, and they have refused to receive correction.” For what amendment is shown by them in whom such aversion to God's service is found? One is ashamed to say it, but one must not keep silence: more is spent upon demons than upon the Apostles, and mad spectacles draw greater crowds than blessed martyrdoms. Who was it that restored this city to safety? That rescued it from captivity? The games of the circus-goers or the care of the saints? Surely it was by the saints' prayers that the sentence of Divine displeasure was diverted, so that we who deserved wrath, were reserved for pardon.
Source: Sermons (New Advent)