And We have already sent messengers before you and assigned to them wives and descendants. And it was not for a messenger to come with a sign except by permission of Allah. For every term is a decree. 38 God blots out, and He establishes whatsoever He will; and with Him is the Essence of the Book. 39 Whether We show them (the unbelievers) to you facing the punishment with which We had threatened them, or make you die first (before its fulfillment), your duty is only to preach. It is up to Us to call them to account (for their deeds). 40 See they not how we aim to the land, reducing it of its outlying parts? (When) Allah doometh there is none that can postpone His doom, and He is swift at reckoning. 41 And verily, those before them did devise plots, but all planning is Allah's. He knows what every person earns, and the disbelievers will know who gets the good end (final destination). 42 And those who disbelieve say: thou art not a sent one. Say thou: Allah is a sufficient witness between me and you, and also he with whom is knowledge of the Book. 43