We sent down messengers before you and gave them wives and children. Yet it was not possible for a messenger to bring a sign, save by the command of God. Every age has had its revelation. 38 Allah effaces whatever He wills and retains whatever He wills. With Him is the Mother of the Book. 39 And whether We show you part of what We promise them or take you in death, upon you is only the [duty of] notification, and upon Us is the account. 40 Have, then, they [who deny the truth] never yet seen how We visit the earth [with Our punishment,] gradually depriving it of all that is best thereon? For, [when] God judges, there is no power that could repel His judgment: and swift in reckoning is He! 41 Those before them did (also) devise plots; but in all things the master-planning is Allah's He knoweth the doings of every soul: and soon will the Unbelievers know who gets home in the end. 42 They who disbelieve say: Thou art no messenger (of Allah). Say: Allah, and whosoever hath knowledge of the Scripture, is sufficient witness between me and you. 43