As to where do people come by, that God is omniscient ?
When you can not even find the word omniscient throughout the Bible.
Where is it written that God is all knowing.
Where does this all come from, As God being all knowing, This all comes from man's teachings and doctrines, from peoples Pastor's, Preachers, that's where.
Then people takes what they have been taught and off they go, telling other people, who possibly don't have a clue or idea themselves.
Instead of checking it out first, Nope they just take what they been told and off they go.
In speading their falsehoods.