After the third denial comes the cock-crow; by which we may understand a Doctor of the Church who with chiding rouses the slumbering, saying, “Awake, ye righteous, and sin not.” [1 Cor 15:14] Thus Holy Scripture uses to denote the merit of divers cases [marg. note: meritum causarum] by fixed periods, as Peter sinned at midnight and repented at cock-crow.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).