Let the dead earth be a Sign for them. We gave it life and produced from it grain whereof they eat. 33 And We produce therein orchard with date-palms and vines, and We cause springs to gush forth therein: 34 So that they may eat of its fruit; yet it was not done by their hands. Then why do they not acknowledge thanks? 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 the night is another Sign for them. We strip the day from it and they become plunged in darkness. 37 And the sun runs its course for its final destination; this is a command of the Almighty, the All Knowing. 38 how We ordained the moon to pass through certain phases until it seems eventually to be like a bent twig; 39 It is not permitted to the sun that it should overtake the moon, nor can the night outstrip the day: each in an orbit, they float. 40 And a sign for them is that We carried their forefathers in a laden ship. 41 and [that] We create for them things of a similar kind, on which they may embark [in their travels]; 42 If it were Our Will, We could drown them: then would there be no helper (to hear their cry), nor could they be delivered, 43 Unless it be a mercy from Us, and as an enjoyment for a while. 44 When it is said to them: 'Have fear of that which is before you and behind you in order that you find mercy' 45 Never does any Sign of their Lord come 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 They also say, 'When shall this promise come to pass, if you speak truly?' 48 [And they are unaware that] nothing awaits them beyond a single blast [of God's punishment,] which will overtake them while they are still arguing - [against resurrection]: 49 Then they cannot make bequest, nor can they return to their own folk. 50