Translation of the verse 12 from Surah Ar-Ra‘d : Number of verses 43 - - page 250 - Part 13.
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).
It is He who shows you lightening, [causing] fear and aspiration, and generates the heavy clouds.
(13:12) It is He Who makes the lightning flash before you to fill you both with fear and with hope: it is He Who produces clouds laden with water.