Musar su Isaia 27:78

Chazal have said (Sanhedrin 99b): “All who study Torah for its own sake make peace in the celestial and terrestrial retinues, viz. (Isaiah 27:5): ‘Or if he but take hold of My stronghold [Torah], he shall make peace for Me [1]; he shall make peace for Me [2].’ Rav said: ‘It is as if he would build the celestial palace and the terrestrial palace, viz. (Ibid. 51:16): “And I have placed My words in your mouth … to plant the heavens and to lay the foundations of the earth.”’”

There are other groups that do not have a share in the world to come: And they are the group of the enemies of the Lord, may He be blessed; the group of the destroyers of the vineyard of the Lord; and the group of the ones inflicting fear in the land of the living. Behold we will present their content and the proof of their punishment explicit in the Torah:
For the group of the enemies of Lord will be lost from the world to come, as it is stated (Deuteronomy 7:10), “But who requites with destruction those who hate Him to his face - never slow with those who hate Him, but requiting them to his face.” Its explanation is that he repays the reward of the commandments fulfilled by those that hate Him, in this world - in order to destroy them from [getting to] the world to come. And its Targum (translation by Onkelos) is, “And He repays those that hate Him the good that they do in front of Him, in their lives, to destroy them. And David said (Psalms 37:20), “But the evildoers shall be lost, and the enemies of the Lord shall be like heavy sheep, completely consumed in smoke.” And he mentioned the expression, “loss,” with the evildoers, as it is [used] for distress and exile - as the matter that is stated (Isaiah 27:13), “the lost who are in the land of Assyria and the expelled, etc.”; (Jeremiah 50:6), “My people were lost sheep”; [and] (Psalms 119:176), “I have strayed like a lost sheep” - and it is also [used] for death, as the matter that is stated (Psalms 119:92), “I would have been lost in my affliction”; (Esther 8:6) “at the loss of my kindred”; [and] (Leviticus 23:30) “and I will cause that soul to be lost” - meaning excision from this world. For evildoers are punished with difficulties and afflictions or with death, and they are also punished with the judgement for their deeds in the world to come. But [David] compared the enemies of the Lord to the meat of sheep, as it will become coals. Therefore, it will be “completely consumed in smoke.” Just like the fat of sheep is consumed in smoke, so too will the enemies of the Lord be consumed. For their souls will be consumed and lost from the world to come. And it is stated (Exodus 20:5), “visiting the guilt of the parents upon the children, upon the third and upon the fourth generations of those who hate Me.”

These "souls" are the ones who have become elevated through the sacrifices offered in our world, (at the time the Temple stood) as students of the Kabbalah will be quick to appreciate. These Kabbalists are aware that the spiritual part of man, commonly known as "soul," exists on five different levels. These levels known in ascending order as נפש, רוח, נשמה, חיה and יחידה. The נפש level we experience on ראש חודש and חול המועד, the רוח level on festivals; the נשמה level on the Day of Atonement, the level חיה every Sabbath. The highest level, that of יחידה we will only experience in the World to Come. The additional sacrifices, called מוספים, which are offered on all the days we have just mentioned, represent the completion of judgment, whereas the daily קרבן תמיד represents the commencement of the judgment process. The קרבן מוסף on שבת consists of two sheep because there are two aspects to the Sabbath the negative as well as the positive commandments. Our sages have called this זכור ושמור בדבור אחד, i.e. that the legislation of the Sabbath in its dual form was expressed in the same words at the time the Ten Commandments were given to the Jewish people. We may also view this phenomenon of the dual nature of the Sabbath as referring respectively to the Sabbath in our world and the Sabbath in the World to Come. In this latter "world" the Sabbath is ever-present, or “שכולו שבת,” in the words of our sages. The Torah next discusses the commandment of blowing the Shofar on New Year's Day, something which is designed to confuse Satan, our accuser. At the appropriate time in the future G–d will slaughter Satan, the Angel of Death. The prophet Isaiah (27,13) describes that time as: "On that day a great ram's horn shall be sounded."

Come and see how great is the power of peace. For in the beginning of the creation of the universe the Holy One Blessed be He employed Himself in the creation of an instrument of peace, as it is written (Bereshith 1:3): "And G-d said: 'Let there be light' — and there was light." And how do we know that light is peace? For it is written (Isaiah 45:7): "He fashions light and creates darkness; He makes peace and creates evil." On this basis, our teachers of blessed memory ruled (Shabbath 23b): "As between a candle for his house and wine for kiddush, to sanctify the Sabbath [if he can afford only one], a candle for his house takes precedence because of the peace of his household." What is more, our sages enacted many ordinances in pursuit of the paths of peace, viz. (Gittin 59a): "They declared the following in pursuit of the paths of peace: 'The Cohein reads first [in the Torah], then the Levite, then the Israelite, because of "the paths of peace."'" An eruv [a halachic enabling device] is placed in an old house, because of "the paths of peace." The pit nearest the irrigation canal is filled first because of "the paths of peace."'" And so is it written (Proverbs 3;17): "Its [Torah's] ways are ways of pleasantness and all of its paths are peace." And thus did our sages of blessed memory say in the aggadah (Bamidbar Rabbah 15:13, Tanchuma Beha'alothecha 11): "There are thirteen things that the Holy One Blessed be He loved, and of all of them, He "doubled" [in profusion of love], only "peace." They [(the thirteen)] are: Cohanim, Levites, Israel, Sanhedrin [the high court], the first-born, the offerings of the tabernacle, the sacrifices, the oil of anointment, the Land of Israel, Jerusalem, the Temple, the kingdom of the house of David, and the silver and the gold. The Cohanim — (Shemoth 28:41): "And they shall be priests unto Me." the Levites (Numbers 3:41): "And I shall take the Levites unto Me." Israel — (Shemoth 19:6): "And you [Israel] shall be unto Me a kingdom of priests." Sanhedrin — (Numbers 11:16): "Gather unto Me seventy men." The first-born — (Shemoth 13:2) "Sanctify unto Me every first-born." The offerings of the tabernacle — (Ibid. 25:2): "And they shall take unto Me an offering." The sacrifices — (Numbers 28:2): "You shall heed to sacrifice unto Me in its appointed time." The oil of anointment — (Shemoth 30:31): "The holy oil of anointment shall this be unto Me for your generations." The Land of Israel — (Ibid. 19:5): "For unto Me is all the land." Jerusalem — (I Kings 11:36): "The city that I have chosen unto Me." The Temple — (I Chronicles 17:12): "He shall build unto Me a habitation." The kingdom of the house of David — (I Samuel 16:1): "For I have seen in his sons a king unto Me." The silver and the gold — (Chaggai 2:8): "Mine is the silver, and Mine is the gold." But, of all of these, none was doubled [in profusion of love] but "peace," as it is written (Isaiah 27:5): "Or let him take hold of My strength. He shall make peace unto Me; peace shall he make unto Me." Great is peace, which takes precedence to praise of the Blessed One Himself. For when Yithro came to Moses, immediately (Exodus 18:7): "And each made inquiry of the other's peace," whereas only afterwards (Ibid. 8): "And Moses related to his father-in-law all of the miracles that the Holy One Blessed be He had wrought for Israel." What is more, for all of the mitzvoth that the wicked perform in this world, the Holy One Blessed be He gives them their reward in this world — such as wealth, property, years, honor, and the like — except peace, which He does not give them, as it is written (Isaiah 57:21): "There is no peace, says my G-d, for the wicked." And, what is more, the Holy One Blessed be He gives peace as a reward to the righteous, as it is written (Ibid. 32:17): "And the reward for righteousness shall be peace…" What is more, it is with peace that He draws near to Him converts and penitents, as it is written (Ibid. 57:19): "He creates the utterance of the lips: 'Peace, Peace,' for the far and the near, says the L-rd, and I will heal him." Great is peace, for in regard to all of the journeyings in the desert it is written "And they journeyed and they rested," journeying in strife and resting in strife. But when they came to Mount Sinai, they made one great "resting," as it is written (Shemoth 19:2): "And Israel rested there, before the mountain." (Vayikra Rabbah 9:9): "The Holy One Blessed be He said: 'The time has now arrived for Me to give Torah to My children.'" For as long as they are at peace with one another, the Shechinah is among them. And thus is it said (Devarim 33:5): "And He was a King in Yeshurun when the heads of the people were gathered, together with the tribes of Israel." When does the kingdom and the Shechinah of the Blessed One abide in Israel? When they are all gathered together as one. Come and see how great is the power of peace; for it is through the power of peace that the world endures. For thus have our sages of blessed memory said (Avoth 1:18): "On three things does the world stand: on judgment, on truth, and on peace, as it is written (Zechariah 8:16): 'Truth and a judgment of peace shall you judge in your gates.'" What is more, when there is peace among men, there is blessing in their fruits, as it is written (Ibid. 12): "For as the seed of peace, the vine shall give its fruit, and the earth shall give its produce, and the heavens shall give its dew, and I shall bequeath all of these to the remnant of this people." And thus is it written (Psalms 147:14): "He makes peace on your borders and sates you with the fatness of wheat." Our sages have said (Vayikra Rabbah 9:9): "Great is peace, for if one erases one letter of G-d's name, he transgresses a negative commandment, as it is written (Devarim 12:3): 'And you shall wipe out their [the idols'] name from that place,' followed by (Ibid. 4): 'You shall not do so to the L-rd your G-d.' Yet to make peace between a man and his wife, the Torah says (Numbers 5:23): 'And the Cohein shall write these curses [containing G-d's name] in a book and erase them into the bitter waters.' The Holy One Blessed be He says: 'Let My name, which was written in holiness, be erased by the waters.'" And Chazal have said further (Vayikrah Rabbah 9:9): "Great is peace, for all of the goodly blessings and consolations that the Holy One Blessed be He convokes upon Israel conclude with "peace." The Shema — "He spreads a canopy of peace." The Amidah — "He makes peace." The priestly blessing — "And He shall repose peace upon you." "Therefore, my sons, be circumspect in this trait — to love peace and to pursue peace. For there is no end to the reward for loving peace and pursuing peace." Until here, the language of Ma'aloth Hamiddoth.

When the prophet Isaiah 27,13 speaks about "that day when a great ram's horn will be sounded to signal the ingathering of the strayed ones in the land of Assyria and the expelled ones in the land of Egypt who will come and worship the Lord on the Holy Mount in Jerusalem," he refers to this reunification of the souls that have been scattered. Our daily prayer: תקע בשופר גדול … וקבץ נדחינו, also has in mind those souls that have been dispersed. The same is true of the prayer on the festivals in which we mention that we have been scattered on account of our sins, etc. There too, we pray not just for the return to Jerusalem of Jewish bodies, but for the return to their origin of those souls that have been forced to endure a second or third round of life in this world. The major thrust of these prayers is for the welfare of our souls. There are many aspects to this transmigration of souls.

The underlying principle of all this is that the way Torah scholars increase peace and harmony in this world is that they demonstrate that the dichotomy between body and soul must be healed, that through Torah study the body is elevated to the level of the soul and not vice-versa, G–d forbid. Through Torah study they also contribute to the harmony in the Celestial Regions. We have an allusion to this in Isaiah 27,5: או יחזיק במעוזי יעשה שלום לי שלום יעשה לי, "Or, if he holds fast to My refuge, he makes peace for Me, peace he makes for Me." The repetition of the word peace indicates that the prophet speaks about peace on earth as well as peace in the Heavens.