213. 'Knowing that they were naked' means knowing and acknowledging that they did not dwell in innocence, as they had done previously, but were under the influence of evil. This is clear from the final verse of the previous chapter, where it is said, 'And they were both naked, the man and his wife, and they were not ashamed'. There it may be seen that being naked and not ashamed means being innocent. The contrary is meant when they are ashamed, as in this chapter which says that they sewed fig leaves together and hid themselves. Indeed when innocence is lacking nakedness arouses feelings of shame and disgrace because people are made aware of their own evil thoughts. Consequently nakedness in the Word stands for evil and shame and has reference to a corrupted Church, as in Ezekiel,

She was naked and bare, and was downtrodden in her own blood. Ezekiel 16:7, 11.

In the same prophet,

Let them leave her naked and bare, and let her nakedness be uncovered. Ezekiel 23:29.

In John,

I counsel you to buy white garments to clothe you, and let not the shame of your nakedness be manifested. Revelation 3:18.

And in reference to Judgement Day,

Blessed is he who is awake and keeps his garments, so that he may not walk naked, and men see his shame. Revelation 16:15.

In Deuteronomy,

If a man has found in his wife some nakedness, let him write her a bill of divorce. Deuteronomy 24:1.

This also was why Aaron and his sons were commanded to have linen breeches to cover their naked flesh when they approached the altar to serve, lest they should bring iniquity upon themselves and die, Exodus 28:42-43.

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.