For God...
For God, the "hidden" does not exist; for Him, the universe is entirely "manifest." The Qur’an says: "He is the Knower of the Hidden and the Manifest, the Compassionate and the Merciful." (59:22) Whatever is made by man derives from the skill, intelligence and knowledge of its maker. The more subtle and refined the product, the more clearly it displays the profound and extensive knowledge of its maker, and the more fully it proves his ability to plan and design.
Man's handiwork is not in any way comparable to the mysteries and splendor of creation. Nonetheless, it suggests to us that the harmonious and orderly scheme of the universe, and the manifestation of intelligence in this vast, beautiful and astounding pattern of creation, must necessarily indicate that the one who plans it and endows it with order must possess boundless and comprehensive knowledge.
The orderliness of the universe is the strongest proof for the existence of a being that overflows with the knowledge, will, awareness and wisdom and has designed the wonders of creation in accordance with a precisely calculated plan. The signs of His infinite knowledge are to be seen plainly in every particle of every phenomenon.
The experiments and theories of scientists furnish proof for who ever desires it of the boundless knowledge of God and its countless manifestations in the insect, animal and vegetable realms.
God is aware of the course of the stars in space, the tumult ridden world of the nebulae and the rotation of the galaxies; of all things from pre-eternity to post-eternity; of the total number of atoms in all the heavenly bodies; of the motions of the billions of creatures, large and small, that move on the face of the earth and in the depths of the oceans; of the norms and laws that unfailingly regulate nature; of the hidden and manifest aspects of all things.
He even knows the perplexities of the distraught better than they do themselves. Listen again to what the Qur’an has to say: Is not the one who created the world aware of the secrets of His own creation? Certainly He has knowledge of all the subtleties and mysteries of the world. (67:14) Nothing is hidden from God, neither on earth nor in the heavens.