Metzora #2- Numbers

"וְהָיָה֩ בַיּ֨וֹם הַשְּׁבִיעִ֜י יְגַלַּ֣ח אֶת־כָּל־שְׂעָר֗וֹ אֶת־רֹאשׁ֤וֹ וְאֶת־זְקָנוֹ֙ וְאֵת֙ גַּבֹּ֣ת עֵינָ֔יו וְאֶת־כָּל־שְׂעָר֖וֹ יְגַלֵּ֑חַ וְכִבֶּ֣ס אֶת־בְּגָדָ֗יו וְרָחַ֧ץ אֶת־בְּשָׂר֛וֹ בַּמַּ֖יִם וְטָהֵֽר" - Perek Yud Daled, Pasuk Tet

Why did the torah have to first give a general statement, then a specific one, the another general one? Why did it have to be on the 7th day? Why did the torah specify these three places? Why did these actions then make him clean again?

What are other times the number 7 is symbolic in the Torah and what does it represent?

Rashi says: The general statement, followed by a specific statement followed again, by a general statement is to include every place where hair grows in a bunch and is visible, [bearing a similarity to the hair of the head, the beard, and the eyebrows]."

Metzora #1- Purification Process

In this weeks parsha, it talks about a person who is inflicted with tzaraat and the purification process. In פסוק יא, it says, “וְהֶֽעֱמִ֞יד הַכֹּהֵ֣ן הַֽמְטַהֵ֗ר אֵ֛ת הָאִ֥ישׁ הַמִּטַּהֵ֖ר וְאֹתָ֑ם לִפְנֵ֣י יְהֹוָ֔ה פֶּ֖תַח אֹ֥הֶל מוֹעֵֽד”. What does it mean to put the person “״לפני ה׳? Isn’t Hashem everywhere? Rashi comments on this and says that he should be put at the gate of the Mishkan but not inside the courtyard since he is not pure. 
What are other reasons for each step of the purification process for a person who has tzara'at?

Tazria #3- Tzara'at's Symbolism

In Tazriya, Perek י״ג Pasuk ב talks about leprosy and skin discoloration. The topic continues throughout the entire perek 

אָדָ֗ם כִּֽי־יִהְיֶ֤ה בְעוֹר־בְּשָׂרוֹ֙ שְׂאֵ֤ת אֽוֹ־סַפַּ֙חַת֙ א֣וֹ בַהֶ֔רֶת וְהָיָ֥ה בְעוֹר־בְּשָׂר֖וֹ לְנֶ֣גַע צָרָ֑עַת וְהוּבָא֙ אֶל־אַהֲרֹ֣ן הַכֹּהֵ֔ן א֛וֹאֶל־אַחַ֥ד מִבָּנָ֖יו הַכֹּהֲנִֽים׃

When a person has on the skin of his body a swelling, a rash, or a discoloration, and it develops into a scaly infection on the skin of his body, it shall be reported to Aaron the priest or to one of his sons, the priests.

Why does a person get leprosy/what does it mean when a person gets leprosy?

Why is it so necessary to have a whole Perek going into so many details and explanations about the process? Also, why are there rules that a Priest may not preform a Bris Milah if the child has any of those skin conditions, What is the reasoning for this? There are some real life cases in the Torah where someone had leprosy where was it and why did they get it?

Rav shamshon Raphael Hirsh says that leprosy shouldn’t be seen as a medical condition but rather as a personal spiritual problem that one needs to fix . A person gets leprosy when they have a religious problem like speaking lashin hara . As proof, he says that tzarat was treated by a priest not a doctor. (Leprosy can also show up in walls and clothes which would be another way of showing that it isn’t a medical problem but rather a spiritual one)

Tazria #2- Childbirth

In this week's parsha it says in Vayikra Perek Yud Bet, Pasuk Bet

‎דַּבֵּ֞ר אֶל־בְּנֵ֤י יִשְׂרָאֵל֙ לֵאמֹ֔ר אִשָּׁה֙ כִּ֣י תַזְרִ֔יעַ וְיָלְדָ֖ה זָכָ֑ר וְטָֽמְאָה֙ שִׁבְעַ֣ת יָמִ֔ים כִּימֵ֛י נִדַּ֥ת דְּוֺתָ֖הּ תִּטְמָֽא׃

Speak to the Israelite people thus: When a woman at childbirth bears a male, she shall be unclean seven days; she shall be unclean as at the time of her menstrual infirmity.

Questions: What is the meaning/ function of the word תזריע? Or what is the function of her being unclean for 7 days? What is the difference between if she has a girl or a boy? Why does childbirth lead to tuma?

Ibn Ezra says that Tazria literally means “yields seed” because a woman resembles the earth when it comes to her reproductive abilities. He also says the reason for her being unclean for 7 days is to wait for her to enter the next lunar quarter. (Also when someone is sick, there are usually changes about 7 days in).

Tazria #1- Tzara'at's Impact

פרק י״ג - פסוק ב

״אדם כי יהיה בעור בשרו שאת או ספחת או בהרת והיה בעור בשרו לנגע צרעת והובא אל אהרון הכוהן או אל אחד מבניו הכהנים.״

“If a man has a se’eith, a sappachath, or a baheret on the skin of his flesh, and it forms a lesion of tzaraat on the skin of his flesh, he shall be brought to Aaron the kohen, or to one of his sons, the kohanim.”

Question: 

When צרעת starts to form on one's skin, they are quickly brought to אהרון or to one of his sons, the כוהנים. But what did צרעת actually look like? Was it always obvious when one was impure with צרעת? Why did Tzara'at impact a person's environment and things they owned? 

A source that relates to my question: 

The passuk only states that בהרת forms into צרעת. Rashi wonders what the word "בהרת" in passuk bet actually means. He says that baheret means "spot" in Old French and is similar to a verse in איוב; “It’s like bright clouds in the skies”, like how the spots are created by bright clouds in the blue sky.