The term rakab, “to ride,” is a synonym. In its primary signification it is applied to man’s riding on an animal, in the usual way; e.g., “Now he was riding (rokeb) upon his ass” (Num. xxii. 22). It has then been figuratively used to denote “dominion over a thing”; because the rider governs and rules the animal he rides upon; e.g., “He made him ride (yarkibehu) on the high places of the earth” (Deut. xxxii. 13); “and I will cause thee to ride (ve-hirkabtika) upon the high places of the earth” (Isa. lviii. 14), that is, you shall have dominion over the highest (people) on earth; “I will make Ephraim to ride (arkib)” (Hos. x. 11), i.e., I shall give him rule and dominion. In this same sense it is said of God, “who rideth (rokeb) upon the heaven in thy help” (Deut. xxxiii. 26), that is, who rules the heaven; and “Him that rideth (la-rokeb) upon the ʻarabot” (Ps. lxviii. 4), i.e., who rules the ʻarabot, the uppermost, all-encompassing sphere. It has also been repeatedly stated by our Sages that there are seven rekiʻim (firmaments, heavens), and that the uppermost of them, the all-surrounding, is called ʻarabot. Do not object to the number seven given by them, although there are more rekiʻim, for there are spheres which contain several circles (gilgallim), and are counted as one; this is clear to those who have studied that subject, and I shall also explain it; here I wish merely to point out that our Sages always assumed that ʻarabot is the uppermost sphere. The ʻarabot is also referred to in the words, “who rideth upon the heaven in thy help.” Thus we read in Talm. B. Ḥagigah, p. 12, “The high and exalted dwelleth on ʻarabot, as it is said, ‘Extol Him that rideth upon ʻarabot’” (Ps. lxviii. 4). How is it proved that “heaven” and “ʻarabot” are identical? The one passage has “who rideth on ʻarabot,” the other “who rideth upon the heaven.” Hence it is clear that in all these passages reference is made to the same all-surrounding sphere, concerning which you will hereafter (II. xxiv.) receive more information. Consider well that the expression “dwelling over it,” is used by them, and not “dwelling in it.” The latter expression would have implied that God occupies a place or is a power in the sphere, as was in fact believed by the Sabeans, who held that God was the soul of the sphere. By saying “dwelling over it,” they indicated that God was separate from the sphere, and was not a power in it. Know also that the term “riding upon the heavens,” has figuratively been applied to God in order to show the following excellent comparison. The rider is better than the animal upon which he rides—the comparative is only used for the sake of convenience, for the rider is not of the same class as the animal upon which he rides—furthermore, the rider moves the animal and leads it as he likes; it is as it were his instrument, which he uses according to his will; he is separate from it, apart from it, not connected with it. In like