Here's why:
* Omniscient: This word literally means "all-knowing" and is often used to describe a deity or a supernatural being that has unlimited knowledge of everything, past, present, and future.
While other terms might be related to knowledge, they don't capture the full scope of "all-knowing" in the same way:
* Wise: Implies a deep understanding and good judgment, but doesn't necessarily mean knowing everything.
* Erudite: Indicates a person with extensive knowledge in a specific area, but not necessarily encompassing all knowledge.
* Knowledgeable: Indicates possession of knowledge, but not necessarily all knowledge.
Therefore, omniscient is the most accurate and specific term for describing the concept of "all-knowing."