"There is no dew properly so called in Israel, for there is
no moisture in the hot summer air to be chilled into dew-drops
by the coldness of the night. From May till October rain is
unknown, the sun shining with unclouded brightness day after
day. The heat becomes intense, the ground hard, and vegetation
would perish but for the moist west winds that come each night
from the sea. The bright skies cause the heat of the day to
radiate very quickly into space, so that the nights are as cold
as the day is the reverse, a peculiarity of climate from which
poor Jacob suffered thousands of years ago (Gen. 31:40). To this
coldness of the night air the indispensable watering of all
plant-life is due. The winds, loaded with moisture, are robbed
of it as they pass over the land, the cold air condensing it
into drops of water, which fall in a gracious rain of mist on
every thirsty blade. In the morning the fog thus created rests
like a sea over the plains, and far up the sides of the hills,
which raise their heads above it like so many islands. At
sunrise, however, the scene speedily changes. By the kindling
light the mist is transformed into vast snow-white clouds, which
presently break into separate masses and rise up the
mountain-sides, to disappear in the blue above, dissipated by
the increasing heat. These are 'the morning clouds and the early
dew that go away' of which Hosea (6:4; 13:3) speaks so
touchingly" (Geikie's The Holy Land, etc., i., p. 72). Dew is a
source of great fertility (Gen. 27:28; Deut. 33:13; Zech. 8:12),
and its withdrawal is regarded as a curse from God (2 Sam. 1:21;
1 Kings 17:1). It is the symbol of a multitude (2 Sam. 17:12;
Ps. 110:3); and from its refreshing influence it is an emblem of
brotherly love and harmony (Ps. 133:3), and of rich spiritual
blessings (Hos. 14:5).