"a cock," perhaps connected with a Hebrew phrase for the oncoming of the light, is found in the passages concerning Peter's denial of the Lord, Matthew 26:34,74,75; Mark 14:30,68,72; Luke 22:34,60,61; John 13:38; 18:27 .
denotes "cock-crowing" (alketor, and phone, "a sound"), Mark 13:35 . There were two "cock-crowings," one after midnight, the other before dawn. In these watches the Jews followed the Roman method of dividing the night. The first "cock-crowing" was at the third watch of the night. That is the one mentioned in Mark 13:35 . Mark mentions both; see Mark 14:30 . The latter, the second, is that referred to in the other Gospels and is mentioned especially as "the cock-crowing."