31:29Have you not seen how God merges the night into the day, and merges the day into the night? That He subjected the sun and the moon, each running for a stated term? And that God is Cognizant of everything you do?

31:33O people! Be conscious of your Lord, and dread a Day when no parent can avail his child, nor can a child avail his parent, in anything. The promise of God is true. Therefore, do not let this life deceive you, nor let illusions deceive you regarding God.