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.

3145. 'And he ungirded the camels' means freedom for the things that were to be subservient. This is clear from the meaning of 'ungirding' as freeing, and from the meaning of 'the camels' as general facts, and so things that were to be subservient, as dealt with just above in 3143. The situation is that without freedom no production of truth ever takes place in the natural man, nor summoning of it from there into the rational man, where it becomes joined to good. It is in a state of freedom that all these things come about, for it is the affection for truth springing from good that sets them free. Unless truth is learned with an affection for it, and so in freedom, it is not even implanted in the mind, let alone raised up towards the interior parts of the mind to become faith there. For all reformation is effected in freedom; all freedom goes together with affection, and the Lord keeps man in freedom so that he can - as if of himself and from what is his own - have an affection for what is true and good and so be regenerated, see 2870-2893. These are the things meant by 'he ungirded the camels'; and unless those things were meant, the details recorded here would have been too trivial to mention.