Internal organs
Rabbi Shimon explains to his son the secret of the inner organs, telling him about the wings of the lung that are like the wings of a dove covered with silver, Chassadim.
Pinchas: Verse 404
And in what way was the king's wrath appeased? It was because "then he heard the voice" (Bemidbar 7:89), this being the voice of the Torah, the voice of the reading of Sh'ma, WHICH IS THE CENTRAL COLUMN, "and it spoke to him" (Ibid.), WHICH IS THE SECRET OF THE REVELATION of CHOCHMAH THAT IS IN MALCHUT, WHICH IS CALLED 'SPEECH,' and this is in the prayer that is formulated in the mouth, which is "Adonai, open my lips; and my mouth shall rehearse Your praise" (Tehilim 51:17), WHICH IS MALCHUT.
Pinchas: Verse 405
And that wind that blows in the wings of the lung, carries the voice out through the trachea (Heb. kaneh), which is "Get (Heb. k'neh) wisdom, get understanding" (Mishlei 4:5). FOR THE VOICE, WHICH IS ZEIR ANPIN, NAMELY VAV, IS THE SON OF YUD HEI, WHICH ARE CHOCHMAH AND BINAH. And about this it is said: "Thus says Adonai Elohim; Come from the four winds, O breath (Heb. ruach)" (Yechezkel 37:9). And the four are the four letters Yud Hei Vav Hei OF ZEIR ANPIN. And this is the wind that beats and palpitates in all the arteries of the heart, about which it is said: "Wherever the spirit (Heb. ruach) was minded to go, they went" (Yechezkel 1:12).
Pinchas: Verse 406
The Holy Luminary said TO THE FAITHFUL SHEPHERD: Certainly, O Faithful Shepherd, it is your level at which it is said: "Then the king's wrath was pacified (Heb. shachachah)," FOR THE LEVEL OF THE FAITHFUL SHEPHERD IS THE CENTRAL COLUMN, WHICH IS ZEIR ANPIN, THAT IS CALLED 'VOICE.' "Happy is the people that is in such a case (Heb. shecachah)" (Tehilim 144:15), SHACHACHAH having the numerical value of Moses. THE FAITHFUL SHEPHERD said to him, Blessed are you, Holy Luminary, FOR YOU ARE the candle that burns before the King and His Matron. "the candle of Hashem" (Mishlei 20:27) is your soul.
Pinchas: Verse 407
RABBI SHIMON said to THE FAITHFUL SHEPHERD, You have given AN EXPLANATION for the brain, the heart, and the wings of the lungs, but what about the two kidneys? The Faithful Shepherd replied, We learned about the wings of the lungs: "who makes the winds His messengers" (Tehilim 104:4), THIS BEING THE SECRET OF CHASSADIM, WHICH ARE CALLED 'WINDS.' The kidneys ARE "the flames of fire His ministers" (Ibid.), NAMELY JUDGMENTS, and the two wings of the lung with the two kidneys stand for the four living creatures of the Throne, WHERE THE WINGS OF THE LUNG ARE LION AND EAGLE, WHICH ARE CHASSADIM, AND THE TWO KIDNEYS ARE OX AND MAN, WHICH ARE GVUROT. And the Throne is the heart that is in the middle, WHICH IS THE THRONE OF JUDGMENT.