The Torah, “Numbers,” 19:6 – 19:7: The kohen shall take a piece of cedar wood, hyssop, and crimson wool, and cast them into the burning of the cow. The kohen shall wash his garments and bathe his flesh in water, and then he may enter the camp, and the kohen shall be unclean until evening.
Spiritual purity means that your intentions are absolutely pure and that in your spiritual work you want to use only the desires that are aimed at connection with others, and through them, with them, with the Creator.
When you work with these desires, you must detach yourself from other egoistic desires, so you need to reveal them.
These desires may not have been revealed in you yet, and you may not even be aware of them or understand how to detach yourself from them. Thus, the Torah instructs us as to how to act. You have to plunge into water (in a Mikve, a pool filled by water from nature), which means to place yourself under the attribute of Bina.
Then, you must be in this state until the evening because only when night falls do the new desires (vessels) appear since every new day begins in the evening.
Since your action was done in these clothes during that day, you don’t have to leave it at the end of the day. You will receive new vessels during the night, and you will be a new person the next day.
Question: Why does a person receive new vessels at night?
Answer: It is because the new desires that rise in a person are not corrected yet, which means that they are in the dark. In the meantime, one cannot work with them with the intention of in order to bestow. This is the reason they are dark.
New vessels are born until midnight, and from midnight onward, they are corrected and the Light is revealed in them gradually, which is called the sunrise.
In fact, there is no sunrise or sunset, but we simply feel dawn, sun, or daylight in the corrected desires.
During the day, we fulfill them correctly, and then they gradually transcend to the next level. When the new, uncorrected desires approach us from a distance, the sun is forced to set by the force of Gevura, the force of rigidity, of Din (Judgment). Then, a new phase begins. The next chain of desires appears in a person, which he must correct. Everything happens inside of us.
Question: What does it mean that the priest must wash his clothes?
Answer: Clothes symbolize the intention. The correction of the ego takes place by helpful intentions.
The five clothes of the priest are a hat, a shirt, a belt, sandals, and trousers. These are the five levels of the egoistic desires, each of which needs a new intention.
From KabTV’s “Secrets of the Eternal Book” 6/10/15