"And these are the generations of Isaac the son of Abraham". Rashi of blessed memory explains "Jacob and Esav, those mentioned in the Section."

The matter is according the response Hillel have to the convert who came to be converted on the condition that [Hillel] teach him the entire Torah on one leg. He received him and taught him "that which is hateful to you do not do to another...". Rashi of blessed memory explains, this is the Commandment "Love your neighbor as yourself". See the Maharsha who objects [and wonders] why [Hillel] did not phrase this to him as the positive commandment which it is in the Torah, and further [he spoke in a] translated manner (Aramaic); unquestionably, [he should have stated his response in a] positive form [for example], 'have mercy on another'. But he said it in a negated form, as if a negative commandment - 'what is hateful to you do not do to another'.

However, the matter is as they stated, may their memory be for blessing: "With Ten Utterances was the world created and they are juxtaposed to the Ten Commandments, as out Sages of blessed memory stated, that He looked into the Torah and created the world. For the matter of the creation of the world is known to have begun from a state wherein He and His Name were in one simple unity without any perceptibility, comprehension or bounds whatsoever, for it is infinite. And when it arose in His simple will create, He constricted Himself, as is known. Now the matter of simple unity and infinity is the utterance "I am" and all the [corresponding] positive Commandments, the constriction (TzimTzum), which is limitation (Gevurah), and the [corresponding] utterance "You shall not have" along with all the details are the negative Commandments which [when taken together] is the entirety of the Torah through cause and effect to each and every detail. And all of the roots and branches in general and her details, which have their source above, manifest [into] fruits below in the form of the performance of the Commandments, which is our holy Torah with all of her Commandments, Decrees and Laws.

And behold they of blessed memory stated "'Inasmuch as Abraham obeyed me and kept my charge..." to teach us that our father Abraham, peace be upon him, kept even [the mitzvah] of Joining the Cooked Foods" which on the surface is confusing for how could he have known to do so? And if we say that he perceived [himself] the actions of the Commandments and the Laws to which the [human] intellect can bind, nevertheless its difficult [to understand] how he could have perceived the Decrees which have no reasoning [behind them] to which the [human] intellect cannot bind, like the Red Hefer and other such Decrees. Our discussion will be understood according the the words of our blessed Sages who stated, "to you I will reveal the reason behind the Red Hefer and the others will be Decrees (without reason)" for all the Decrees do [in fact] have a reason and a source above in the order of the creation, for the creation occurred in accordance with the Torah, its just that 'no [human] mind can contain it' - and [this is the meaning of] "...the others will be Decrees". However, the Torah does not speak to 'great ones' such as Moshe or our father Abraham, peace be upon them, before whom nothing stood as a Decree [without reason]; rather all the Decrees to them were Commandments in their understanding and they perceived their reasoning and source.

However, without his [first reaching a spiritual level at which] the Commandments are nullified and no longer need apply to him, it is impossible for [the great man] to upturn the Decrees into Commandments. For example, all the negative Commandments like do not murder, do not commit adultery, do not steal - warnings which are not applicable to [the great man] in relation to the breaking of his lustful pursuit of all the physical attributes [since] he'd never use them for his personal needs whatsoever, but [rather] only for God. All actions for his personal needs are abhorrent to him as mud and feces, from which we need not warn any man to distance himself as he would in any case do so out of disgust. In this vein, King David, peace be upon him, said "and my heart is void within me". For a person of this ilk, for whom the Commandments need not apply, to him is revealed the reasoning of the Decrees, and the Decrees thus become as though Commandments. And this is what they of blessed memory meant that in the days of the Messiah the Commandments will be nullified "for the Land will be filled with Understanding of God", and they will possess a different Torah from the Decrees which will become as Commandments. And when a person goes from strength to strength, higher and higher, until he reaches and stands before the root of the whole Torah and Commandments which is "I am HaShem your God...", simple unity and infinite, he then crimps the wings of all the Commandments and Decrees, and they are all nullified. And this is the nullification of the Evil Inclination and elevation of it [back] to prior to the beginning of creation. For from where [else] does the Evil Inclination come? In truth, in the beginning and prior to the creation is the positive [Commandment(s)] "I am HaShem your God..." and [only] afterward the negative [Commandments]. But in [human] perception of the Commandments [the order] must be reversed - in the beginning to 'abandon evil' (negative commandments) and then 'do good' (positive commandments). For a man in his beginning is [in the aspect of] "a wild ass is born a man" - his [spiritual] level is very low and he needs to add from the mundane onto his holiness, higher and higher, until [he reaches] "I am HaShem your God..." And this is [the meaning] of the convert who came to be converted and wanted to learn the whole Torah [standing] on one leg. Meaning, [the whole Torah] in one self-sustaining construct. And in truth his lesson [should have been] that indeed the source of all is "I am HaShem your God" (as above). But the convert could not have understood the apprehension of [the positive] "I am..." if not by way of the negation prior ("And you shall not have"), in order that it be on his level, which begins very low. And this is why he said "The rest is commentary. Go study"; for the [actual] Commandment is [the positive form] "Love thy neighbor..." and the negated [form] "that which is hateful to you, do not do to another" - they are the Commandments "I am..." and "You shall not...", [respectively]. And in accordance with Rashi's understanding, this is "And these are the generations of Isaac the son of Abraham" for it is the order of creation and the meaning is that Isaac, who is the constriction (TzimTzum) and the boundaries (Gevurot), is the son of Abraham who is loving-kindess (Chesed) and simple unity. And from these, they propagated to the entire world. And this is what Rashi of blessed memory explained in that 'the generations are Jacob and Esav who are spoken about in the Section'. For as Rashi explained about Esav "he was made and fully developed with hair" on the day he was born. And as the Zohar states on the verse "When an ox or a sheep or a goat is born", immediately upon the day it is born it is called an Ox, in contrast to a Man. Although in reality [only] a man's materialistic attributes are [in fact] fully developed on the day he's born, as is said 'Sin couches at the door...of the elderly king and the fool'. And so on the day of his birth he was called Esav. Afterward Jacob's hand held onto Esav's heel, the meaning of which is that 'his hand' is [Jacob's] perception which is Lower Wisdom [represented by the letter] YuD - and this is YaDo/Hand. And afterward, from [the Lower Wisdom] he reaches Upper Wisdom and the Commandment "I am..." which is the simple unity. He who is of understanding will understand.