"Thou causest the Night to gain on the Day and Thou causest the Day to gain on the Night; Thou bringest the Living out of the Dead and thou bringest the Dead out of the Living; and Thou givest sustenance to whom Thou pleasest without measure." 370 371 272
Verses 238-39 are parenthetical, introducing the subject of prayer in danger. This is more fully dealt with in iv. 101-03.
True in many senses. In every twenty-four hours, night merges into day, and day into night, and there is no clear boundary between them. In every solar year, the night gains on the day after the summer solstice, and the day gains on the night after the winter solstice. But further, if light and darkness are viewed as symbols of (a) knowledge and ignorance, (b) happiness and misery, (c) spiritual insight and spiritual blindness, Allah's Plan or Will works here too as in the physical world, and in His hand is all Good.
We can interpret Dead and Living in even more senses than Day and Night: death physical, intellectual, emotional, spiritual. Life and Death may also apply to collective, group, or national life. And who has ever solved the mystery of Life? But Faith refers it to Allah's Will and Plan.