Oil
Oil -- typically olive oil -- symbolizes the good that comes from celestial love. Celestial love is love of the Lord, the highest and purest love we can have. The good of celestial love is the desire to be good springing from celestial love: Wanting to do the Lord's will because you love Him. That's not a state many reach, even in heaven, but it's a beautiful goal. This representation makes sense based on the idea that the sun -- the source of all natural light and heat, and thus all natural life -- represents the Lord, the source of all spiritual light, heat and life. Burning oil was the most pure fire available in Biblical times, thus the closest representation of the sun people could create.
Ezekiel 25
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The word of Yahweh came to me, saying,
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Son of man, set your face toward the children of Ammon, and prophesy against them:
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and tell the children of Ammon, Hear the word of the Lord Yahweh: Thus says the Lord Yahweh, Because you said, Aha, against my sanctuary, when it was profaned; and against the land of Israel, when it was made desolate; and against the house of Judah, when they went into captivity:
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therefore, behold, I will deliver you to the children of the east for a possession, and they shall set their encampments in you, and make their dwellings in you; they shall eat your fruit, and they shall drink your milk.
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I will make Rabbah a stable for camels, and the children of Ammon a resting place for flocks: and you shall know that I am Yahweh.
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For thus says the Lord Yahweh: Because you have clapped your hands, and stamped with the feet, and rejoiced with all the despite of your soul against the land of Israel;
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therefore, behold, I have stretched out my hand on you, and will deliver you for a spoil to the nations; and I will cut you off from the peoples, and I will cause you to perish out of the countries: I will destroy you; and you shall know that I am Yahweh.
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Thus says the Lord Yahweh: Because Moab and Seir say, Behold, the house of Judah is like all the nations;
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therefore, behold, I will open the side of Moab from the cities, from his cities which are on his frontiers, the glory of the country, Beth Jeshimoth, Baal Meon, and Kiriathaim,
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to the children of the east, [to go] against the children of Ammon; and I will give them for a possession, that the children of Ammon may not be remembered among the nations.
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and I will execute judgments on Moab; and they shall know that I am Yahweh.
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Thus says the Lord Yahweh: Because Edom has dealt against the house of Judah by taking vengeance, and has greatly offended, and revenged himself on them;
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therefore thus says the Lord Yahweh, I will stretch out my hand on Edom, and will cut off man and animal from it; and I will make it desolate from Teman; even to Dedan shall they fall by the sword.
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I will lay my vengeance on Edom by the hand of my people Israel; and they shall do in Edom according to my anger and according to my wrath; and they shall know my vengeance, says the Lord Yahweh.
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Thus says the Lord Yahweh: Because the Philistines have dealt by revenge, and have taken vengeance with despite of soul to destroy with perpetual enmity;
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therefore thus says the Lord Yahweh, Behold, I will stretch out my hand on the Philistines, and I will cut off the Cherethites, and destroy the remnant of the sea coast.
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I will execute great vengeance on them with wrathful rebukes; and they shall know that I am Yahweh, when I shall lay my vengeance on them.
