Hour

First found in Dan. 3:6; 4:19, 33;5:5. It is the rendering of
the Chaldee shaah, meaning a "moment," a "look." It is used in
the New Testament frequently to denote some determinate season
(Matt. 8:13; Luke 12:39).

With the ancient Hebrews the divisions of the day were
"morning, evening, and noon-day" (Ps. 55:17, etc.). The Greeks,
following the Babylonians, divided the day into twelve hours.
The Jews, during the Captivity, learned also from the
Babylonians this method of dividing time. When Judea became
subject to the Romans, the Jews adopted the Roman mode of
reckoning time. The night was divided into four watches (Luke
12:38; Matt. 14:25; 13:25). Frequent allusion is also made to
hours (Matt. 25:13; 26:40, etc.). (See DAY T0000984.)

An hour was the twelfth part of the day, reckoning from
sunrise to sunset, and consequently it perpetually varied in
length.