(6:33) We know that you, [O Muhammad], are saddened by what they say. And indeed, they do not call you untruthful, but it is the verses of Allah that the wrongdoers reject. (6:34) And certainly were messengers denied before you, but they were patient over [the effects of] denial, and they were harmed until Our victory came to them. And none can alter the words of Allah. And there has certainly come to you some information about the [previous] messengers. (6:35) And if their evasion is difficult for you, then if you are able to seek a tunnel into the earth or a stairway into the sky to bring them a sign, [then do so]. But if Allah had willed, He would have united them upon guidance. So never be of the ignorant. (6:36) Only those who hear will respond. But the dead - Allah will resurrect them; then to Him they will be returned. (6:37) And they say, "Why has a sign not been sent down to him from his Lord?" Say, "Indeed, Allah is Able to send down a sign, but most of them do not know." (6:38) And there is no creature on [or within] the earth or bird that flies with its wings except [that they are] communities like you. We have not neglected in the Register a thing. Then unto their Lord they will be gathered. (6:39) But those who deny Our verses are deaf and dumb within darknesses. Whomever Allah wills - He leaves astray; and whomever He wills - He puts him on a straight path.