And a sign for them is the dead land, that We quickened and brought forth from it grain, whereof they eat; 33 and We made therein gardens of palms and vines, and therein We caused fountains to gush forth, 34 that they might eat of its fruits and their hands' labour. What, will they not be thankful? 35 Purity is to Him Who created all pairs, from what the earth grows, and of themselves, and from the things they do not know. 36 And a sign for them is the night; We strip it of the day and lo, they are in darkness. 37 And the sun runs on to a term appointed for it; that is the ordinance of the Mighty, the Knowing. 38 We have ordained phases for the moon until finally it becomes like an old date-stalk. 39 [and] neither may the sun overtake the moon, nor can the night usurp the time of day, since all of them float through space [in accordance with Our laws]. 40 And a Sign for them is that We bore their race (through the Flood) in the loaded Ark; 41 and We have created for them the like of it whereon they ride; 42 We could have drowned them if We pleased, and none would have answered their cry for help, nor would they have been saved, 43 Unless by mercy from Us and as comfort for a while. 44 But when it is said to them, "Beware of what is before you and what is behind you; perhaps you will receive mercy... " 45 None of the signs of their Lord ever comes to them but they turn away from it. 46 When they are told: "Spend of what God has given you," the unbelievers say to those who believe: "Why should we feed those whom God should have fed if He pleased?" You are only in palpable error. 47 Further, they say, "When will this promise (come to pass), if what ye say is true?" 48 They are only waiting for a single blast that will seize them, but they will go on contending. 49 Then they will be unable to make a will, nor shall they return to their kinsmen. 50