80. The context of the verse makes it clear that it is not attempting to enumerate in detail all the articles of faith in which one should believe, or all the principles of conduct which one should follow in order to merit reward from God. These matters are mentioned elsewhere, in their appropriate places. The aim of the verse is merely to repudiate the illusion cherished by the Jews that, by virtue of their being Jews, they have a monopoly of salvation. They had long entertained the notion that a special and exclusive relationship existed between them and God. They thought, therefore, that all who belonged to their group were predestined to salvation regardless of their beliefs and actions,. whereas all non-Jews were predestined to serve as fodder for hell-fire.

To clarify this misgiving the Jews are told that what really matters in the sight of God is true faith and good deeds rather than formal affiliation with a certain religious community. Whoever has true faith and good deeds to his credit is bound to receive his reward, since God will judge people on the basis of merit rather than on the grounds that a man's name happens to be listed in the world as a member of one religious community or the other.

81. From the manner in which this incident is described at various places in the Qur'an it is obvious that, at that time, it was quite well known to the Israelites. It is difficult, however, after the Passage of many centuries to be able to speak with certainty about the precise nature of the incident. All we can say is that while the Children of Israel were making their covenant in the shadow of Mount Sinai, they witnessed an awesome phenomenon and felt as if the mountain was about to fall upon them. (Verse 171 of Surah al-A'raf) seems to portray this. See also (n. 132 in that surah.)

82. Sabbath, i.e., Saturday . It was laid down that the Israelite should consecrate that day for rest and worship. They were required to from abstain from all worldly acts, including cooking (which they might neither do themselves, nor have their servants do for them). The injunctions, in this connection were so strict that violation of the Sabbath was to be punished with death. (See Exodus 31:12-17. ) When religious and moral decadence, however, spread among the Israelites they indulged in open desecration of the Sabbath, so much so that in Jewish towns trade and commerce were carried out in broad daylight.

83. The details of this incident are mentioned later in (Surah 7, vv. 163) ff. The exact manner in which their transformation into apes took place is disputed. Some scholars are of the opinion that the transformation was a physical one, while others hold that they were invested with the attributes characteristic of apes. But both the words and the manner in which this incident is recounted in the Qur'an seem to suggest that what took place was a physical transformation of certain persons into apes rather than just a moral metamorphosis. What seems plausible to me is that while their minds were allowed to remain intact, their bodies were changed into those of apes.