We did send messengers before thee, and appointed for them wives and children: and it was never the part of a messenger to bring a sign except as Allah permitted (or commanded). For each period is a Book (revealed). 38 Allah eliminates what He wills or confirms, and with Him is the Mother of the Book. 39 Whether We show you part of what We have promised them or cause you to pass away [before that], your mission is only to give warning; it is for Us to do the reckoning. 40 Do they not see how We come to the land and reduce its extremities? Allah judges; none repel His judgement. Swift is His reckoning. 41 And indeed those before them had plotted; therefore Allah Himself is the Master of all strategies; He knows all what every soul earns; and soon will the disbelievers realise for whom is the final abode. 42 And [if] they who are bent on denying the truth say [unto thee, O Prophet,] "Thou hast not been sent [by God]", say thou: "None can bear witness between me and you as God does; and [none can bear witness as does] he who truly understands this divine writ. 43