Have We not made the earth (like) a resting place, and the mountains as (its) pegs, and We created you in pairs, and We made your sleep for rest, and We made the night as covering, and We made the day for livelihood, and We constructed above you seven mighty (heavens), and We placed (in them) a burning (lamp), and sent down from rain clouds water pouring abundantly, producing by it grain and vegetation, and gardens of thick foliage?