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.

10055. 'A fire offering to Jehovah' means all things springing from Divine Love. This is clear from the meaning of 'a fire offering to Jehovah' as that which springs from Divine Love; for 'fire' in the Word means love in both senses, and when used in reference to Jehovah or the Lord it means Divine Love. For the meaning of 'fire' as love in both senses, see 4906, 5215, 6314, 7324; and for its meaning - in the highest sense, in which Jehovah or the Lord is the subject - as Divine Love, 6832, 6834, 6849. A burnt offering is called 'a fire offering to Jehovah' because when the Divine took on the Human, from that Human fought against and subdued the hells, and at the same time united it to the Divine, in order to save the human race, He did so out of pure love. That uniting is meant by a burnt offering, see 10042, 10053.