From The Art and Popular Culture Encyclopedia
Omnipresence is the ability to be present in every place at any, and/or every, time; unbounded or universal presence. It is related to the concept of ubiquity, the ability to be everywhere at a certain point in time.
This characteristic is most commonly used in a religious context, as most doctrines bestow the trait of omnipresence unto a superior, usually a deity commonly referred to as God by monotheists. This idea differs from Pantheism.
Brahmanism, and other religions that derive from it, incorporate the theory of transcendental omnipresence which differs greatly from the traditional meaning of the word. This theory defines a universal and fundamental substance, which is the source of all physical existence.
Some argue that omnipresence is a derived characteristic: an omniscient and omnipotent deity knows every thing and can be and act every where, simultaneously. Others propound a deity as having the "Three O's", including omnipresence as a unique characteristic of the deity. Most Christian denominations — following theology standardized by the Nicene Creed —explain the concept of omnipresence in the form of the Trinity, by having a single deity made up of three omnipresent 'substances' or 'persons'.