Omni, means “all,” while scient, although not a common word, means “knowing, skillful, aware, knowledgeable.” Therefore, omniscient means total knowledge or knowing everything. God is omniscient.
The noun form of omniscient is omniscience.
In addition to being omniscient, God is also omnipresent and omnipotent.
Key verse that describes God’s omniscient character: Even if we feel guilty, God is greater than our feelings, and he knows everything (1 John 3:20, NLT).
A lifelong student of the Bible, Peter DeHaan, PhD, wrote the 1,000-page website ABibleADay.com to encourage people to explore the Bible. His main blog and many books urge Christians to push past the status quo and reconsider how they practice their faith in every area of their lives.