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Cock-crowing: In our Lord's time the Jews had adopted the Greek and Roman division
of the night into four watches, each consisting of three hours, the
first beginning at six o'clock in the evening
(Luke 12:38; Matthew 14:25)
(Mark 6:48) But the ancient division, known as the first and second
cock-crowing, was still retained. The cock usually crows several
times soon after midnight (this is the first crowing), and again at
the dawn of day (and this is the second crowing). Mark mentions
(Mark 14:30) the two cock-crowings. Matthew
(Matthew 26:34) alludes to that
only which was emphatically the cock-crowing, viz, the second.