Their Messengers said to them: Do you people involve Allah in doubt when it is He who generated the heavens and the earth and brought them into existence and He invites you to His system of faith and worship so that you qualify to receive His blessings and the forgiveness of your sins! He grants you respite to confess yourselves mistaken and your punishment He puts in respite up to a predetermined point of time. They said: "But you are simply mortals like us and you just want us to turn our backs upon the gods our fathers held in holy reverence and veneration! Give us then solid evidence that convinces our minds and tends to prove the conclusion."