Indeed in that is a sign for those who fear the punishment of the Hereafter. That is a Day for which the people will be collected, and that is a Day [which will be] witnessed.
In Allah’s severe punishment of those disobedient towns there is a lesson and warning for the one who fears the punishment of the Day of Judgement. Allah will gather people on that day to take them to account, and it will be witnessed by all people on the plains of the resurrection.