The argument goes on about the Resurrection of Man. It is a style of Qurän to pause on a critical point of a story and then apply to some conclusions. The previous verse (NO.19) was encouraging men to travel mentally through the earth, and see how Allah has originated the creation, and how He concludes and then renews it.

      Then here in the above verse (NO.20), the Guide Book of Allah bids us to continue our travel through the earth physically, in order to study God's creation, and the past and present of Man, and the causes of their fortune and misfortune. Such a study may lead us to the gates of the life to come, which already exists beyond this material world of us:-

      ``Say; travel through the earth and see how has He originated the creation, and then Allah will create the last creation, as He has done the first; for He has power to do all things.''

      The successive two verses will prove the possibility of the Resurrection and the life in the world to come.

      Proofs can be found for the oneness of God by the study of Man's Internal and External world. So is the case with the matter of Resurrection that can be proved in the same way.

      In other word, if we travel through the earth physically, we can see many wonders of creation that will astonish our minds, and attract our attention and admiration. Then if we open our eyes, we can see wonders upon wonders, each of which is a clear sign of the Unity and Oneness of the Creator. Then if we travel through the earth spiritually and with a keen sight and through, we soon shall come to know that each green leaf is a great book, the pages of which are all filled with strange miracles of God, and the wonders of His creation. Then from the known we can easily know the unknown.

      Then the verses apply to one of the main problems of Resurrection Day; and that is the Mercy and Punishment of God:-

      ``He punishes whom He will, and He will have Mercy on whom He will, and to him you shall return.''

      Although God's Mercy will always take precedence of His wrath, here in this verse, God's punishment has been mentioned before His Mercy! This might be due to the sentence being in a threatening mode. It also may be taken that Punishment and Mercy here are mentioned in their general sense of meanings, which then they will include the Punishment and Mercy in this world, as well as that of the life to come.