Omnipresence or ubiquity is the property of being present everywhere. This property is most commonly used in a religious context as an attribute of a deity or supreme being.
The omnipresence of a supreme being is conceived differently by different religious systems. In monotheistic beliefs like Christianity, Judaism, and Islam the divine and the universe are separate, but the divine is present everywhere. In pantheistic beliefs the divine and the universe are identical. In panentheistic beliefs the divine interpenetrates the universe, but extends beyond it in time and space.
Hinduism, and other religions that derive from it, incorporate the theory of transcendent and immanent omnipresence which is the traditional meaning of the word, Brahman. This theory defines a universal and fundamental substance, which is the source of all physical existence.
Divine omnipresence is thus one of the divine attributes, although in Western Christianity it has attracted less philosophical attention than such attributes as omnipotence, omniscience, or being eternal.
In western theism, omnipresence is roughly described as the ability to be "present everywhere at the same time", referring to an unbounded or universal presence. Omnipresence means minimally that there is no place to which God’s knowledge and power do not extend. It is related to the concept of ubiquity, the ability to be everywhere or in many places at once. This includes unlimited temporal presence.William Lane Craig states that we shouldn’t think of God as being in space in the sense of being spread out like an invisible ether throughout space. He is not like an invisible gas that is everywhere present in space. This would be incorrect for several reasons. For one, it would mean that if the universe is finite, which is perfectly possible, then God would be finite. We do not want to say that because God is infinite. More seriously, if God is spread out throughout space, like an invisible ether, that means that he is not fully present everywhere.