Assuredly We vouchsafed the Book unto Musa; so be thou not in doubt in thy receiving it. And We appointed it to be a guidance unto the Children of Is'rail. 23 We appointed leaders from among them, guiding by Our command when they were steadfast and when they had firm faith in Our signs. 24 Surely your Lord will judge between them on the day of resurrection concerning that wherein they differ. 25 Is it not a guidance for them (to observe) how many generations We destroyed before them, amid whose dwelling places they do walk? Lo! therein verily are portents! Will they not then heed? 26 Observe they not that We drive water unto a land bare, and bring forth therewith crops whereof their cattle and they themselves eat? Will they not therefore be enlightened? 27 Yet they say: "When will this decree come, if you speak the truth?" 28 Say, "On the day of the final triumph, the faith of the disbelievers will be of no avail to them, nor will they be given any respite". 29 So (leave them to themselves and) turn away from them and wait; they too are waiting. 30