The Secret of Torah Must Be Closed Up and Sealed
YHWH’s secret is for those who fear Him (Psalms 25:14).
“As the thigh is concealed, so are the words of Torah concealed” (BT Mo’ed Qatan 16a–b).
“What is meant by [Her profit and fee shall be consecrated to YHWH. They shall not be treasured or stored; rather shall her profit go to those who abide before YHWH, that they may eat their fill and] לִמְכַסֶּה עָתִיק (limkhasseh athiq), cover themselves elegantly (Isaiah 23:18)? This refers to one who מְכַסֶּה (mekhasseh), conceals, things that עָתִּיק (Attiq), the Ancient of, Days concealed. What are those? Secrets of Torah. And some say: This refers to one who reveals things that עָתִּיק (Attiq), the Ancient of, Days concealed. What are those? Reasons [lit., Flavors] of Torah” (BT Pesaḥim 119a).
“Wine that gladdens the heart of man (Psalms 104:15). This is the wine of Torah, for יַיִן (yayin), wine, is numerically equivalent to סוֹד (sod), secret [cf. BT Sanhedrin 38a]. Just as wine has to be kept sealed so that it should not be used in a libation for idol worship, so also must the secret of Torah be closed up and sealed, and not be disclosed other than to those who fear Him. And it is not for nothing that several decrees are performed בַּיַיִן (ba-yayin), with wine, and blessings to the blessed Holy One are said with it. Wine comes in ב״ (two) colors: white and red, which are Judgment and Compassion. And this is why we have the added ב (bet) in בַּיַיִן (ba-yayin), with wine [ב (bet) is numerically equivalent to two and alludes to the two qualities of Judgment and Compassion]. It is like the rose which has in it both white and red, white from the right side, and red from the left side.
Why does it say לְבַב (le-vav), the heart, of man? It should have said לֵב (lev), heart? There is one heart [Binah] hidden within another heart [Shekhinah]. They are ל״ב (thirty-two) [iterations of] אֱלֹהִים (Elohim) in the Work of Creation. And the ב (bet) of בְּרֵאשִׁית (bereshit), in the beginning (Genesis 1:1), and the ל (lamed) of לְעֵינֵי כָּל יִשְׂרָאֵל (le-einei kal yisra’el), before the eyes of all Israel (Deuteronomy 34:12) [i.e., the first verse and the last verse of the Five Books of Moses]. Twice לֵב (lev), heart, is sixty-four, which is eight less than seventy-two; [seventy-two is numerically equivalent to:] וַיְכֻלּוּ (va-yekhulu), and were completed (Genesis 2:1). These are the seven days of Creation. What of the eighth [to complete the seventy-two]? The seven days of Creation together with This is the book of the lineage of Adam (Genesis 5:1) [which is also considered to be a day of Creation]. And this seventy-two is also the sum of בַּיַיִן (ba-yayin), ‘with wine’” (Zohar 3:215b, Ra’aya Meheimna Pineḥas, cf. Zohar 2:124b).