Bible Study with Jairus – Leviticus 13-14

In chapters 13 and 14 God gave Moses detailed instructions on how leprosy should be handled by the priests. I was puzzled reading these chapters wondering why God spent so much time discussing the details of this disease. What spiritual significance do these chapters hold for us today?
Because I was travelling, I did not participate in the Bible reading of Leviticus 13. It was led by another man. I asked him several questions about the following verses. Let’s look at the verses first and follow up with my questions.
13:9 (NIV) “When anyone has a defiling skin disease, they must be brought to the priest.
13:10 (NIV) The priest is to examine them, and if there is a white swelling in the skin that has turned the hair white and if there is raw flesh in the swelling,
13:11 (NIV) it is a chronic skin disease and the priest shall pronounce them unclean. He is not to isolate them, because they are already unclean.
13:12 (NIV) "If the disease breaks out all over their skin and, so far as the priest can see, it covers all the skin of the affected person from head to foot,
13:13 (NIV) the priest is to examine them, and if the disease has covered their whole body, he shall pronounce them clean. Since it has all turned white, they are clean.
13:14 (NIV) But whenever raw flesh appears on them, they will be unclean.
13:15 (NIV) When the priest sees the raw flesh, he shall pronounce them unclean. The raw flesh is unclean; they have a defiling disease.
13:16 (NIV) If the raw flesh changes and turns white, they must go to the priest.
13:17 (NIV) The priest is to examine them, and if the sores have turned white, the priest shall pronounce the affected person clean; then they will be clean.”
These verses are very confusing. Looking at verses 1-8, it says if a person has leprosy, he must come to the priest to seek a diagnosis. If it is deeper than the skin, it is leprosy. If it is not deeper than the skin, it needs to be observed for a while. If it spreads in the skin, it is also leprosy.
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