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.

7269. 'And Aaron your brother will be your prophet' means doctrinal teachings derived from it. This is clear from the meaning of 'prophet' as the truth contained in doctrinal teachings, thus teachings derived from the Word, dealt with in 2534. For more about the representation of 'Aaron' as the teachings of the Church or teachings derived from the Word which present what is good and true, see 6998, 7009, 7089. Since 'prophet' means doctrinal teachings, its meaning in a more precise and limited sense is, in accordance with what has been stated immediately above at the end of 7268, a teacher.