Blasphemy may sometimes be rooted in misunderstanding the nature of prophethood and miracles. Here an eternal miracle is pointed to, namely the Glorious Qurän, saying: ``And if you are in doubt concerning that which We have sent down to our servant, then produce a chapter like it.'' Here is a particular test. God has put many chapters before you. Can you produce at least one single chapter like it? By that, Qurän calls to challenge all those who reject the idea that there is REVELATION, and that, it is from God. This is to make a reason against them out of their inability and failure. Not themselves alone, but if there be any one apart of Allah, who may inspire spiritual truth in such a noble language, let them bring their works forth or help you in doing that - ``Then call your witnesses apart from Allah if you are truthful.'' In the following verse, (NO. 24) the book denies their ability of doing that EVER! ``But if you do it not, and NEVER shall you do it, then guard yourself against the fire the fuel of which is MEN & STONES, prepared for the unbelievers.''