Commentaire sur Job 1:6

Now the day came about That day which was Rosh Hashanah, (known as a day of sounding the shofar, and the Holy One, blessed be He, commanded the Adversary to bring the merit and the guilt of all creatures. This is the meaning of “from going to and fro on the earth.”)

Maimonides has explained that all that is bad, whether it be personal or general, is associated with 'matter'. All objects or bodies that exist and decay, are only subject to this decay by reason of their matter; for as regards their form, or the essence of their form, they are indestructible.²According to Maimonides the destruction of physical objects results from their matter and not their form. The body of man is matter and his soul is form. The body alone dies; the soul is immortal. The essential nature of matter is its property of always being able to assume a new form. And so form can only be destroyed coincidentally, i.e., on account of its intimate association with matter, such as when a physical object assumes a new form. Maimonides continues:
It is therefore clear that all corruption, destruction or defect comes from matter. Take, for example, man; his deformities and unnatural shape of limbs; all weakness, interruption, or disorder of his actions, whether innate or not, originate in the transient matter, not in the form. All other living beings likewise die or become ill through the matter of the body and not through its form. Man's shortcomings and sins are all due to the matter of the body and not to its form; while all his merits are exclusively due to his form. Thus the knowledge of God, the formation of ideas, the mastery of desire and passion, the distinction between that which is to be chosen and that which is to be rejected, all these man owes to his form; but eating, drinking, sexual intercourse, excessive lust, passion, and all vices, have their origin in the matter of his body.³Guide for the Perplexed Part 3, Chapter 8
Accordingly, we are told how the 'sons of God', who are the forces found throughout creation, His sons and His handiwork, were in attendance before the Lord. All of them, since He is the Lord who sustains and who is the source of all existence; for maintaining existence is continual creation. They are joined by Satan, who is the force of extinction and the source of evil, decay, sin and everything else that obliterates and damages. As Maimonides explained:
It does not say: 'And the Sons of God and Satan came to present themselves before the Lord'; for this sentence would have implied that the existence of both was of the same kind and rank...it only states that he joined them. Satan does not attend God of necessity and a priori, for he has no role in existence, only in extinction and decay. He only joins them because he is needed by the sublunar 'Sons of God', viz., the material forces; for the existence of a material object requires a prior extinction that changed form.⁴Guide for the Perplexed Part 3, Chapter 22. In the sublunar world, an object must first undergo some degree of extinction or destruction before it can assume a new form. Change, therefore, cannot occur in the sublunar world without Satan, the agent of extinction and destruction. On the other hand, he has no role in the immutable celestial world.
Behold, we have a tradition that each of the natural forces of creation is governed by a superior agency that is also its source. These are the 'sons of God' who were in attendance before the Lord; angels that are controlled by and receive their power from God and who are in turn appointed over each of the forces of existence. As the Talmudic Sages said: There is no plant that does not have an angel appointed over it telling it to grow.⁵Bereshit Rabbah 10:6. The Midrashic source actually speaks of 'a destiny in the firmament that acts upon the plant' rather than 'an angel that is appointed over it.' This notion appears in the Zohar (II,171a) too:
Acting as guardians over this world are all the stars of the firmaments, with each individual object of the world having a specially designated star to care for it. The herbs and the trees, the grass and the wild plants, to bloom and increase must have the power of the stars that stand over them and look directly at them, each in its particular mode. Likewise, an ethereal agent has also been appointed over the force of extinction and destruction: Satan, the adversary, the killer and the destroyer. As the Talmudic Sages said: He is Satan, he is the evil inclination, he is the Angel of Death (Baba Batra 16a), He is the accuser, the one permitted to corrupt and destroy.

and the angels of God came to stand beside the Lord to contend with Him, because the expression of standing refers only to judgment, as it is stated (Isa. 3:13): “The Lord stands to plead.”

and the Adversary, too, came among them to accuse the people.