And ask thou them concerning the town that was close on the sea, when they transgressed in the matter of the sabt, when their fish came unto them openly on their sabt day, while they came not on the day whereon they kept not the sabt. Thus they were wont to transgress. 163 And whenever some people among them asked [those who tried to restrain the Sabbath-breakers,] "Why do you preach to people whom God is about to destroy or [at least] to chastise with suffering severe?" - the pious ones would answer, "In order to be free from blame before your Sustainer, and that these [transgressors, too,] might become conscious of Him." 164 Then when they forgot that wherewith they had been exhorted, We delivered those who restrained from evil, and We laid hold of those who did wrong with a distressing torment for they were wont to transgress. 165 And when they had scornfully persisted in what they had been forbidden, We said to them: 'Be apes, despised' 166 (Muhammad), consider, when your Lord declared to the (Israelites) His decision to raise a people above them who would make them suffer the worst kinds of torments until the Day of Judgment. Certainly your Lord's retribution is swift. He is All-forgiving and All-merciful. 167 We divided them into nations on the earth; some are righteous and others are not. We tested them with well-being and hardship so that they might return (to the right path). 168 After them succeeded an (evil) generation: They inherited the Book, but they chose (for themselves) the vanities of this world, saying (for excuse): "(Everything) will be forgiven us." (Even so), if similar vanities came their way, they would (again) seize them. Was not the covenant of the Book taken from them, that they would not ascribe to Allah anything but the truth? and they study what is in the Book. But best for the righteous is the home in the Hereafter. Will ye not understand? 169 As to those who hold fast by the Book and establish regular prayer,- never shall We suffer the reward of the righteous to perish. 170 ۞ And [mention] when We raised the mountain above them as if it was a dark cloud and they were certain that it would fall upon them, [and Allah said], "Take what We have given you with determination and remember what is in it that you might fear Allah." 171