As for those who reject Our signs as false, We shall lead them, step by step, to their ruin without their even perceiving it. 182 for, behold, though I may give them rein for a while. My subtle scheme is exceedingly firm! 183 Have they not pondered that their companion [i.e. the Prophet Muhammad] is not afflicted with insanity? He is only a plain warner. 184 Have they not pondered deeply regarding the kingdom of the heavens and the earth, and whatever things Allah created? And that possibly their promise (of death) may have come near? So after this*, in what will they believe? (*Advent of the Last Prophet and the Holy Qur’an.) 185 For those whom Allah lets go astray, there is no guide; and He will leave them in their transgression to stumble blindly. 186 They ask you (Muhammad), "When will the Day of Judgment be?" Tell them, "My Lord knows best. It is He who has appointed its time. It will be a grave hour both in the heavens and the earth. It will only approach you suddenly." They say, "It seems that you know about the coming of the Day of Judgment." Tell them, "Only God knows about it and most people do not know." 187 Say, "I myself have no power to benefit or do harm, save as God pleases. If I had knowledge of the unseen, I would have availed myself of an abundance of good, and no harm would have touched me. I am but a warner and a bearer of good tidings for those who will believe." 188