Page "Omniscience" Paragraph 9

Some theists argue that God created all knowledge and has ready access thereto.

This statement invokes a circular time contradiction: presupposing the existence of God, before knowledge existed, there was no knowledge at all, which means that God was unable to possess knowledge prior to its creation.

Alternately if knowledge was not a " creation " but merely existed in God's mind for all time there would be no contradiction.

In Thomistic thought, which holds God to exist outside of time due to his ability to perceive everything at once, everything which God knows in his mind already exists.

Hence, God would know of nothing that was not in existence ( or else it would exist ), and God would also know everything that was in existence ( or else it would not exist ), and God would possess this knowledge of what did exist and what did not exist at any point in the history of time.