Vayikra 26:5

וְהִשִּׂ֨יג לָכֶ֥ם דַּ֙יִשׁ֙ אֶת־בָּצִ֔יר וּבָצִ֖יר יַשִּׂ֣יג אֶת־זָ֑רַע וַאֲכַלְתֶּ֤ם לַחְמְכֶם֙ לָשֹׂ֔בַע וִֽישַׁבְתֶּ֥ם לָבֶ֖טַח בְּאַרְצְכֶֽם

“…And you shall eat your bread to satisfaction and dwell securely in your land”.

This can be explained based on the words of the Kabbalists regarding the intention (kavanah) of dipping the slice of bread into salt. It is known from the words of our Sages (Sanhedrin 94b):

Why is the letter מ (Mem) in the word le-marbeh (“of the increase,” Isaiah 9:6) closed (written as a final Mem—ם), when it appears in the middle of a word where it should be an “open” Mem?

The Holy One, Blessed be He, sought to make King Hezekiah the Messiah (Mashiach). The Attribute of Justice said before Him: “You performed so many miracles for him, yet he did not sing a song of praise before You—and You want to make him the Messiah?”

Therefore, the מ was “closed” to indicate that there would still be exile (Galut), may the Merciful One protect us, until we merit the complete Redemption, speedily in our days, Amen. At that time, the מ will be opened.

Since the word for “bread” (לֶחֶם – Lechem) contains a “closed” Mem (ם) which hints at exile, we dip it into “salt” (מֶלַח – Melach), which begins with an “open” Mem (מ). Through this, “bread” (Lechem) becomes “your bread” (לַחְמְכֶם – Lachmechem—from the verse), in which the Mem in the middle is now “open.”

An open Mem indicates Kingship (Malchut)—that the glory of His kingship will be revealed in the world. This is also the meaning of “to satisfaction” (La-sova), which shares a root with “seven” (Sheva); as is known from the Zohar, Malchut is the seventh (Sefirah).