What is the meaning of the dew Isaac spoke about in Gen. 27: 28
NIV - 28 May God give you heaven's dew and earth's richness - an abundance of grain and new wine.
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Dew Of Heaven by Wayne Blank Dew is generally defined as water vapor in the air that condenses on a cool surface during the night (i.e. warm air is able to hold more moisture than cool air), hence grass becomes wet when the "dew point" is reached during night cooling. In very dry areas, there is not enough moisture in the air to produce dew, however if the arid area is adjacent to a large body of water, dew can still happen, but in a different way. At night, moisture-laden winds from the sea are drawn in over the more rapidly-cooling dry land surface where it condenses into a fine mist that waters the vegetation, i.e. the "dew of heaven" if you lived (or live, the principle has not changed from ancient times) in a very dry area, it (was) a blessing to be located where the "dew of heaven" happened. in relation to the Holy Spirit we read how (God) "will pour water on the thirsty land (those who thurst for Him), and streams on the dry ground (those who have not known Him); I will pour my Spirit upon your descendants, and my blessing on your offspring. They shall spring up like grass amid waters, like willows by flowing streams." (Isaiah 44:3-4 RSV)
Dew is a source of great fertility (Genesis 27:28; Deuteronomy 33:13; Zechariah 8:12), and its withdrawal is regarded as a curse from God (2 Samuel 1:21; 1 Kings 17:1). Importance to Israel: Dew was a present necessity to the people of Israel as it is today to the people of the same lands, so Yahweh says, "I will be as the dew unto Israel" (Hos 14:5). Dew and rain are of equal importance and are spoken of together in 1 Ki 17:1. DEW [SMITH] This in the summer is so copious in Palestine that it supplies to some extent the absence of rain and becomes important to the agriculturist. Thus it is coupled in the divine blessing with rain, or mentioned as a prime source of fertility, (Genesis 27:28; 33:13; Zechariah 8:12) and its withdrawal is attributed to a curse. (2 Samuel 1:21; 1 Kings 17:1; Haggai 1:10) Symbol of Blessing: Isaac in blessing Jacob asked that the "dew of heaven" (Genesis 27:28) may be granted to him; that these things which make for fertility and prosperity may be his portion. Value of Dew in Palestine: In Palestine, it does not rain from April to October and were it not for the dew in summer all vegetation would perish. Dew and rain are equally important. If there is no rain the winter grass and harvests fail; if no dew, the late crops dry up and there is no fruit. Failure of either of these gifts of Nature would cause great want and hardship, but the failure of both would cause famine and death. Even on the edge of the great Syrian desert in Anti-Lebanon, beyond Jordan and in Sinai, considerable vegetation of a certain kind flourishes in the summer, although there is not a drop of rain for six months. The dews are so heavy that the plants and trees are literally soaked with water at night, and they absorb sufficient moisture to more than supply the loss due to evaporation in the day. It is more surprising to one who has not seen it before to find a flourishing vineyard practically in the desert itself. Some of the small animals of the desert, such as the jerboa, seem to have no water supply except the dew.
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