'Morning watch' in the Bible

And in the morning watch, the LORD looked unto the host of the Egyptians out of the fiery and cloudy pillar, and troubled their host;

And on the morrow Saul put the people in three parts. And they came in upon the host in the morning watch, and slew the Ammonites, until the heat of the day. And they that remained, scattered: so that two of them were not left together.

My soul fleeth unto the LORD before the morning watch, I say, before the morning watch.