All is lost & all is found in God experience

God is beyond human imagination, but he is a living reality. Brahman is no metaphysical abstraction. It is the fullest and the most real being.
The existence of God cannot be proved by scientific experimentation. The Absolute baffles the mind of even the greatest scholar. It eludes the grasp of even the mightiest intellect. It is experienced as pure consciousness, where intellect dies, scholarship perishes, and the entire being itself is completely lost in It. All is lost, and all is found.
You want laboratory proofs? Very fine, indeed! You wish to limit the illimitable, all-pervading God in your test-tube, blow-pipe, and chemicals. God is the source for your chemicals. He is the substratum for your atoms, electrons, and molecules. Without Him, no atom or electron will move, He is the inner ruler.

It is God who lends power to our senses, perception to our mind, discernment to our intellect, strength to our limbs. It is through His will that we live and die. But man vainly imagines that he is the actor and the enjoyer. Man is a mere nothing before the almighty, governing Power that directs the movement in the universe.
God’s will expresses itself everywhere as law. The law of gravitation, cohesion, relativity, cause and effect, the laws of electricity, chemistry, physics, all the psychic laws, are expressions of God’s will.
As we explain everything within nature by the law of cause and effect, so also, nature as a whole must be explained. It must have some cause. This cause must be different from the effect. It must be some supernatural entity, i.e., God.
Nature is not a mere chance collection of events, a mere jumble of accidents, but an orderly affair. The planets move regularly in their orbits; seeds grow into trees regularly; the seasons succeed each other in order. Now, nature is Jada, insentient. It cannot order itself. It requires the existence of an intelligent being-God who is responsible for it. Even Einstein, the scientist, was strongly convinced of creation of the universe by a Supreme Intelligence.

Though you do not see the stars in the daytime, yet they do exist. Though you cannot see the sun during a cloudy day, yet it does exist. Even so, though you cannot see God with these physical eyes, yet He does exist. If you get the divine eye or the eye of intuition by the practice of meditation, you will behold Him.
God is self-proved. He does not want any proof, because He is the basis for the act or process of proving.
Where is God? There is nowhere where He is not. Just as one thread penetrates all the flowers in a garland, so also, one Self penetrates all these living beings. He is hidden in all beings and forms, like oil in seed, butter in milk, mind in brain, Prana in the body, fetus in the womb and sun behind clouds.
Courtesy sivananda.org

Swami Sivananda