The Unseen belongs to Allah and only He has Knowledge of the Hour

Allah tells us of the perfection of His knowledge and ability to do all things, by telling us that He alone knows the Unseen of the heavens and the earth. No one knows anything about such things except for what Allah informs about as He wills. His complete power, which no one can oppose or resist, means that when He wants a thing, He only has to say to it "Be!" and it is, as Allah says:

وَمَآ أَمْرُنَآ إِلاَّ وَحِدَةٌ كَلَمْحٍ بِالْبَصَرِ

Commentary

The Divine statement: لَا تَعْلَمُونَ شَيْئًا (when you knew nothing - 78) indicates that knowledge is not an ingrained personal excellence of man. When born, man has no knowledge or skill. Then, in proportion to growing human needs, man is made to absorb some knowledge, bit by bit, directly from Allah Ta’ ala in which no role is played by the parents or teachers. First of all, man was taught to cry. This one qualification alone provides all he needs at that time. Hungry or thirsty, he cries. Feels hot or cold, he cries. If some other discomfort bothers him, he would still cry. Nature has poured a special kind of love in the hearts of the father and the mother for the needs of the infant, because of which, when they hear the sounds made by the child, they become all too eager to find out what is bothering the baby, and all too willing to remove the problem. If the child was not inducted into this act of crying as part of his or her early education from a side no less than that of Allah Himself, who else could have trained the child to employ this skill and start crying like that as and when there be some need. Along with it, Allah Ta’ ala also taught the child, inspiration-wise, that he or she should use gums and lips to suck milk, the child's energy food, from the breast of the mother. If this education and training was not natural and direct, no teacher anywhere could dare make this newborn learn to pout and move the mouth right and suck nipples on the breast. Thus, with the increase in the needs of the child, nature took care of teaching its charge directly without the intermediary link of the father and mother, in a manner almost spontaneous and self-regulating. After the passage of some time, the child starts learning a little by hearing parents and others around say what they do, or pick up a few tips by seeing a few things around. This, then, creates in the child the ability to understand sounds heard and things seen.