The word "omniscient" means having complete and unlimited knowledge about everything. It describes someone or something that knows everything and has full understanding of all things. Full definition
Christians believe in a loving, omniscient God who is in total control of everything including when, how and why people die. (religion.blogs.cnn.com)
Opening with maximum pretension — Emma Thompson, serving as omniscient narrator, places events in context by blathering on about Voyager 1 and its journey beyond our solar system — Men, Women & Children quickly introduces its iDamaged ensemble, all of whom live in the same sleepy suburb. (film.avclub.com)
But I've never offended some all - powerful omniscient being that created the Universe. (religion.blogs.cnn.com)