Ramchal brings the following penetrating Perush:
Regarding "These bones are all of the House of Israel (Yechezkel 37:11)", know that there are two kinds of love. There ifs love for HaKadosh Baruch Hu, and there is love for the Shechina.
Love for HaKadosh Baruch Hu is common to all Chassidim of Israel who keep the Divine watch in truth, and tremble for every commandment, and flee from sin and do good. However, the love of the Shechina is the will and the desire to repair the Shechina, in a real way according to the decreed orders and levels, and that is what is most dear to HaShem among all things that we can do. Regarding this, the giants of all times were praised, and here is the difference between the early ones (Rishonim) and the later ones (Acharonim).
The root of all this is in the Sephirot. The two levels of Divine service correspond to the two females, Leah and Rachel. The matter is that the service of the King regarding the Shechina is continuous. There is an internal female aspect (Leah), that does not rise, and does not go down, but always remains constant, in order to complete Zeir Anpin to ten Sephirot. The seven Sephirot are "bone from my bones (Bereshit 2:23)", which does not change. But Rachel is the barren housewife (Tehilim 113:9). She is the flesh, which sometimes is plentiful and sometimes is scarce, and this is the matter of Kilkulim and Tikkunim that are found in her.
The truth is that I should elaborate further on this, but I do not want to digress from my topic. The summary of the matter is that those who work according to the general Divine service, are rooted in Leah, referred to as the bone. And those who work to achieve Tikkun for the Shechina are rooted in the flesh, which is Rachel. And at the end of the Exile, the situation has developed that "She has no one to lead her, Rachel, from all the sons that she gave birth to (Yeshaya 51:18). And all of Israel are found to be truly "dry bones" (Yechezkel 37:4) ...
Because, this is the complete task of man, to serve in the love of the Shechina in addition to the love of HaKadosh Baruch Hu. In this matter the Arizal was teaching correctly when he said that the main occupation of man must be with the internal aspects of the Torah, because only that gives light to the Shechina, as is said in the Zohar and in the Tikkunim, that "I will look at it and remember my eternal covenant (Bereshhit 9:16)" is said only regarding the secrets of Torah. See, here are his words, which also appear in Sha'arei Zion (a Siddur), in order to be widely published:
One who has a sharp mind should study one hour, or two hours at most, in Halacha, and the rest of the day he should devote himself to the secrets of Torah. And who is not sharp all day should occupy himself only with the internal aspects of Torah, and not with the external aspects.
That is the truth without doubt, and this is desired by HaShem our G-d. Even if many of our Chachamim will not accept this, we have no alternative to the words of truth.
Therefore, I applied my heart, and in view of the ability that the living G-d granted me, to understand and become wise in the depth of the secrets of Torah, it is clear that this is my fate - it comes from HaShem, and I will not let Him go (Shir HaShirim 3:4). And I will leave the straw that suits animals - to the animals. What is fitting to man - let be for man, as Rashbi said. I serve G-d, eating from the tree of life, according to the blessing of HaShem, Who gives me a daily portion, day by day.
Iggrot Ramchal 89
