the means of leading to this chief object. What prevented Him from giving us, as part of our nature, the will to do that which He desires us to do, and to abandon the kind of worship which He rejects? There is one general answer to these three questions, and to all questions of the same character: it is this: Although in every one of the signs [related in Scripture] the natural property of some individual being is changed, the nature of man is never changed by God by way of miracle. It is in accordance with this important principle that God said, "O that there were such an heart in them, that they would fear me," etc. (Deut. v. 26). It is also for this reason that He distinctly stated the commandments and the prohibitions, the reward and the punishment. This principle as regards miracles has been frequently explained by us in our works: I do not say this because I believe that it is difficult for God to change the nature of every individual person; on the contrary, it is possible, and it is in His power, according to the principles taught in Scripture; but it has never been His will to do it, and it never will be. If it were part of His will to change [at His desire] the nature of any person, the mission of prophets and the giving of the Law would have been altogether superfluous.
I now return to my theme. As the sacrificial service is not the primary object [of the commandments about sacrifice], whilst supplications, prayers, and similar kinds of worship are nearer to the primary object, and indispensable for obtaining it, a great difference was made in the Law between these two kinds of service. The one kind, which consists in offering sacrifices, although the sacrifices are offered to the name of God, has not been made obligatory for us to the same extent as it had been before. We were not commanded to sacrifice in every place, and in every time, or to build a temple in every place, or to permit any one who desires to become priest and to sacrifice. On the contrary, all this is prohibited unto us. Only one temple has been appointed, "in the place which the Lord shall choose" (Deut. xii. 26); in no other place is it allowed to sacrifice: comp. "Take heed to thyself, that thou offer not thy burnt-offerings in every place that thou seest" (ibid. v. 13); and only the members of a particular family were allowed to officiate as priests. All these restrictions served to limit this kind of worship, and keep it within those bounds within which God did not think it necessary to abolish sacrificial service altogether. But prayer and supplication can be offered everywhere and by every person. The same is the case with the commandment of ẓiẓit (Num. xv. 38); mezuzah (Deut. vi. 9; xi. 20); tefillin (Exod. xiii. 9, 16); and similar kinds of divine service.
Because of this principle which I explained to you, the Prophets in their books are frequently found to rebuke their fellow-men for being over-zealous and exerting themselves too much in bringing sacrifices: the prophets thus distinctly declared that the object of the sacrifices is not very essential, and that God does not require them. Samuel therefore said, "Hath the Lord as great delight in burnt-offerings and sacrifices as in obeying the voice of the Lord" (1 Sam. xv. 22)? Isaiah exclaimed, "To what purpose is the multitude of your sacrifices unto me? saith the Lord" (Isa. i. 11); Jeremiah declared: "For I spake not unto your fathers, nor commanded them in the day that I brought them out of the land of Egypt, concerning burnt-offering or sacrifices. But this thing commanded I them, saying, Obey my, voice, and I