1. Remember that, although polytheists, the Arabs to whom these verses are addressed did acknowledge God as the Creator of the heavens and the earth, Who causes day to alternate with night, and Who has brought into existence the sun and the moon. None of them attributed any of these acts to either al-LAt, al-Hubal, al-'UzzA or any other deities. Why, then,'should they prostrate themselves before others beside the Creator? Why should they offer their prayers and supplicatiom to any but God? (See Towards Understanding the Qur'an, vol. I, (Surah 1, n.2), and (Surah 2, n.163) The actual word that has been used in the original text for 'darkness' is in the plural. The contrast with the singular 'light' is significant: whereas light is one, there can be innumerable degrees of darkness, which is the absence of light.
2. The elements composing the human organism are all, without exception, derived from the earth. Hence it is said that man has been created out of clay.
3. This alludes to the Hour of Judgement when human beings, regardless of the age in which they lived, will be broought back to life and summoned to render an account before their Lord.
4. The allusion is to the Migration (Hijrah) and the numerous victories destined to follow it in quick succession. When this allusion was made, the unbelievers could not have guessed what kind of news they would receive, and even the Muslims could not have imagined those developments. Infact, the Prophet himself (peace be on him) was not fully aware of the posibilities which lay in store.