How does God know that He is God? How can he know that there are no Gods above Him? Only the faithful are able to ask these questions, but still, questions that are worth answering.
To sum it up, God knows He is God because He is omnipotent, omniscient, and omnipresent. He is all-knowing, ever-present, and all-powerful. Therefore, he would know if he was not God and if he shared spaces with another god. He’s also the most powerful, therefore He would be in charge of creation. Let us elaborate.
God is Omnipotent

Realizing that God is all-powerful makes dealing with this ever-evolving, unpredictable world a little less daunting. We may take comfort in the knowledge that God is omnipotent and will ultimately prevail no matter how weak or unprepared we may feel in the face of adversity.
This God, the King who is all-powerful, all-knowing, all-loving, and faithful, rules supremely and safely holds us in His hands. When we grasp this, we can confidently rise above anything that tries to bring us down.
God is said to be omnipotent (from the Greek, omnis, all, and potent, power) when it is asserted that He is both the most powerful being in the universe and the ultimate cause of all other powers. Although He restricts everything else, He is infinite in power, knowledge, love, sanctity, and the ability to carry out His own will.
As the first thing in existence, He is also the sole thing that couldn’t have been caused. Even if we can’t fully comprehend His might, we may get a sense of it by looking at the world He created. According to Colossians 1:16, God created everything in the universe, including the stars, sun, moon, and the laws of nature and the human heart.
That is to say, everything in the cosmos testifies to the greatness of God. At his command, countless galaxies, each containing billions of stars, sprung into being. The most massive and luminous star in the cosmos is R136a1. Its brightness is 8,700,000 times that of the sun, making it the brightest star in the universe. Now, think about how the sun, which provides all of Earth’s energy, burns at a core temperature of around 14 million degrees.
Without God, neither solar units nor degrees would be possible. His level of power demonstrates that He is the one who causes, not the one who is caused.
God is Omnipresent
What does it mean to say that “God is omnipresent”? It means, quite literally, that God is present in all places.
The expression and recognition of the omnipresence of God is not consistent. Despite popular belief, omnipresence does not imply pantheism. The Greek term for “god” or “divine” is “pan,” therefore “pantheism” literally translates to “all god.”
Some people believe in a pantheistic God who is so closely associated with the cosmos that he or she is completely woven into His own fabric. As a method to define pantheism, the phrase “God is everything and everyone, and everyone and everything is God” is helpful. Those who hold this view claim that “divinity” and “reality” in the cosmos are synonymous.
In the 17th century, philosopher Baruch Spinoza promoted this “pantheistic thought,” which had previously inspired early Gnostic organizations. The “pantheism controversy” is still a discussion with theologians today. At least some adherents of religions like Hinduism, Buddhism, and cults that worship “mother nature” and similar concepts also believe in pantheism.
However, this is not what is meant by the biblical references to Jehovah God’s omnipresence. God’s omnipresence is made clear in texts like Psalm 139:7-8, yet we also know that God is not everything. One may claim that God indwells them, but that doesn’t make them divine. That’s the very definition of worshipping false gods.
Another perverted worldview that denies God’s existence is deism. The word “deism” derives from the Latin word “deus,” which means “god.” Deists acknowledge the existence of a transcendent Creator or Supreme Being, but they reject the idea that this Being plays any direct part in the world or the lives of its creatures. Therefore, under deism, this Being may exist but not interfere or directly engage with humans.
The deist worldview is another perverted take on God’s existence. From the Latin word for “god,” “deus,” we get the word “deism.” Deists accept the existence of a transcendent Creator or Supreme Being, but they reject the idea that this Being plays any direct part in the world or the lives of its creatures. So, under deism, this Being may be “present,” but it may not interfere or engage with humanity.
God is Omniscient

What does it imply when someone claims, “God is omniscient,” and how does God’s omniscience impact our actions and beliefs?
To be omniscient is to have complete and total knowledge. The Latin words “omnis,” meaning “all,” and “scientia,” meaning “knowledge,” form the basis of this term. The English term “science” comes from the Latin word “scientia.”
By “omniscient,” Christians mean that God has perfect knowledge of everything that has ever happened and will ever happen. Ultimately, God is where we can trace our learning back to. There is no possibility that God is unaware of. God is omniscient, meaning He is aware of our ideas even before we have them.
“He is omniscient, which means that He knows in one free and effortless act all matter, all spirit, all relationships, and all events,” A.W. Tozer stated in The Pursuit of God.
Despite our greatest efforts, there is a cap to our knowledge and comprehension. Personal history has us confined to a certain era. There is no limit to God’s wisdom. As a result of God’s omniscience, we may put our faith in His promises and wait patiently for His timing. God knows everything, even if we don’t.
Elihu questioned Job in Job 37:16 if he had heard of “the wondrous works of Him who is perfect in knowledge.” There is a foundational premise for comprehending the scope of God’s wisdom in this passage. The Hebrew word “Taman,” translated here as “perfect,” implies both “perfect” and “complete” or “finished” in other contexts.
It seems to reason that if there was a god before God or a god who created God, God would know about it, given that He has full, complete knowledge of the past, present, and future.
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