God knows what any female bears [in her womb,] and by how much the wombs may fall short [in gestation,] and by how much they may increase [the average period]: for with Him everything is [created] in accordance with its scope and purpose. 8 He is the knower of the unseen and the visible, the Great, the Most-Exalted. 9 Alike (to Him) among you is he who conceals (his) words and he who speaks them openly, and he who hides himself by night and (who) goes forth by day. 10 Each has guardian angels before him and behind him, who watch him at God's command. God does not change the condition of a people's lot, unless they change what is in their hearts. But when God decrees punishment for a people, none can ward it off. Besides Him, they have no protector. 11 It is He who shows you the lightning, as a fear (for travellers) and as a hope (for those who wait for rain). And it is He Who brings up (or originates) the clouds, heavy (with water). 12 And the thunder exalts [Allah] with praise of Him - and the angels [as well] from fear of Him - and He sends thunderbolts and strikes therewith whom He wills while they dispute about Allah; and He is severe in assault. 13 The only true appeal is to God alone; those they appeal to instead of Him will never respond to them in any way. They are like a man who stretches forth his hands toward the water, so that it may reach his mouth, but it never does. The calls of those who deny the truth are all in vain. 14 All in the heavens and the earth prostrate themselves before God, either of their own free will or by force, just as do their shadows in the mornings and evenings. ۩ 15 Say: 'Who is the Lord of the heavens and the earth' Say: 'Allah' Say: 'Why then have you chosen guardians other than Him, even though they have neither the power to benefit nor harm themselves' Say: 'Are the blind and the seeing equal? Are darkness and light equal? Or, have they ascribed to Allah associates who create as He creates so that all creation is alike to them?" Say: 'Allah is the Creator of everything. He is the One, the Conqueror' 16 He sends down water from the sky that fills riverbeds to overflowing, each according to its measure. The torrent carries along swelling foam, akin to what rises from smelted ore from which man makes ornaments and tools. God thus depicts truth and falsehood. The scum is cast away, but whatever is of use to man remains behind. God thus speaks in parables. 17 For those who respond to their Lord, are (all) good things. But those who respond not to Him,- Even if they had all that is in the heavens and on earth, and as much more, (in vain) would they offer it for ransom. For them will the reckoning be terrible: their abode will be Hell,- what a bed of misery! 18