More details of the aforementioned verses are given here in which the sun is introduced as a light emitting source, and the moon as a light reflector.

      Not only the sun and moon, that everything in God's creation has use and purpose, beauty and grace, and fits into his universal design. In these verses, the sun is shown in its glory and splendour, and the moon in its beauty and attraction, and both of them are the signs of God's infinite and amazing power and knowledge of creation and His limitless Mercy and Grace.

      The sun, not only warms the bed of all the creatures, but also it nourishes all plants and animals. As an immense source of energy, it causes all the movements upon the earth, even those of the winds and the waves, and flow of streams and the eruption of springs.

      If the sun cease shining over the earth, soon every moving creature will die in the dark of the night.

      The moon too, with its poetical beauty, and spritual loveliness is our lamp in the night, and our water pump in the day, which its gravital attraction causes the lowِtide and highِtide of the seaِa vital natural phenomena for the life of plantations.

      here phases are arranged so that we may easily know the number of the years and the seasons, and use it in our time reckoning as a natural calendar.

      Not only the celestial bodies, but whatever is in the heavens and in the earth, be it large or small, it is a sign, and a well polished mirror that reflects the power, the purpose, the knowledge, and the general plan of God who is indeed all in all. Only those can see the marks and signs of our Lord in every particle, who have the mirror of their heart polished by piety and virtue.