Evil (sins and disobedience of Allah, etc.) has appeared on land and sea because of what the hands of men have earned (by oppression and evil deeds, etc.), that Allah may make them taste a part of that which they have done, in order that they may return (by repenting to Allah, and begging His Pardon). 41 Say, [O Muhammad], "Travel through the land and observe how was the end of those before. Most of them were associators [of others with Allah]. 42 Therefore in purity set your face to the religion, before there comes from Allah a Day that cannot be turned back. On that Day mankind will be separated. 43 Those who reject Faith will suffer from that rejection: and those who work righteousness will spread their couch (of repose) for themselves (in heaven): 44 That He may reward out of His bounty those who believe and do good works. Lo! He loveth not the disbelievers (in His guidance). 45 And of His signs is this: He sendeth herald winds to make you taste His mercy, and that the ships may sail at His command, and that ye may seek his favour, and that haply ye may be thankful. 46 We sent Messengers before you to their respective nations, and they brought Clear Signs to them. Then We took vengeance upon those who acted wickedly. It was incumbent on Us to come to the aid of the believers. 47 It is Allah who sends the winds, and they stir the clouds and spread them in the sky however He wills, and He makes them fragments so you see the rain emerge from within them. And when He causes it to fall upon whom He wills of His servants, immediately they rejoice 48 even though a short while ago, [just] before it was sent down upon them, they had abandoned all hope! 49 See, then, the tokens of Allah's Mercy: how He revives the earth after it is dead. Verily He is the One Who will revive the dead. He has power over everything. 50 And if We (but) send a Wind from which they see (their tilth) turn yellow,- behold, they become, thereafter, Ungrateful (Unbelievers)! 51 So verily thou canst not make the dead to hear, nor canst thou make the deaf to hear the call, when they show their backs and turn away. 52 Nor do you guide the blind out of their error; you only make those hear who believe in Our signs, so they have submitted. (The disbelievers are referred to as blind.) 53