(Then He ordained them) He created them (seven heavens) one above the other (in two Days) each day the equivalent of 1,000 years of the years of the life of this world (and inspired in each heaven its mandate) He created for each heaven its inhabitants and commanded it its command; (and we decked the nether heaven) the first heaven (with lamps) with stars, (and rendered it inviolable) and We protected it by means of the stars from the satans, such that some stars are an adornment for the heaven and remain fix, and some of which are used for finding directions in the darkness of land and sea and some are missiles sent against the satans. (That is the measuring) the providence (of the Mighty) in retribution against those who disbelieve in Him, (the Knower) of His providence as well as of those who believe in Him and those who do not.