There is Supersoul within this body, everyone's body. So I am individual person, you are individual person. You know about your body. You do not know, I do not know---but so far we know that it is my body. I do not know what is going on within this body. We are eating foodstuff. How it is transformed into blood and then from blood to muscle and bone and so many things, big factory is going on, we do not know. But Kṛṣṇa knows, God knows, because He has given this body. He knows everything. Therefore He said, kṣetra-jñaṁ cāpi māṁ viddhi. Janmādy asya yataḥ [SB 1.1.1].
This body is manufactured by the agent, the material nature. We do not manufacture. The father, mother, they gives us, they give us this body, but he does not know; neither the father knows, neither the mother knows how this body is manufactured. That is known to God, Kṛṣṇa. He has set up the machine. So therefore He says, kṣetra-jñaṁ cāpi māṁ viddhi: "You are also knower of this body. Also, I am also knower of this body," sarva-kṣetreṣu. "But you are simply knower of your body; he knows about his body. But I know about your body, his body, others' body, others' body, that..." That is called God = omniscient, omnipotent. My pains and pleasure, I understand; your pains and pleasure, you understand. But I do not understand your pains and pleasure, and you do not understand what is my pains and pleasure. But God knows your pains and pleasure, my pains and pleasure; therefore He is all-pervading.
Otherwise, why do we go to God for offering our prayers and submit, "My Lord, this is my pains and pleasure. Kindly give me relief"? He knows. He can give relief. He is all-powerful. He can give you relief. Otherwise why there is process = go to the church or go to the temple or go to the mosque, offer your prayers? That is religion. In every human society there is some kind of religion to offer prayer to the Lord---everyone knows, anyone who is religious---because He knows everything, and He can mitigate.
Srila Prabhupada's lecture on Bhagavad-gītā 13.3, Feb. 26, 1975, Miami