Knowledge of simple intelligence: God's natural knowledge of all possibles, prior to every decree
By the knowledge of simple intelligence they mean the knowledge by which God knows and understands everything possible, the essences of things, and all their connections, whether necessary or possible in any way at all.
This knowledge is called natural rather than free. In our way of conceiving, it comes before every decree of God about the things to be made. It could not have been absent from God even if he had willed to create nothing outside himself.
Latin
IX. Per scientiam vero simplicis intelligentiae significant eam qua Deus novit & intelligit omnia possibilia rerumque essentias & connexiones omnes, seu necessarias, sive quomodocunque possibiles. Atque haec scientia dicitur naturalis, non libera; quia praecedit, juxta nostrum concipiendi modum, omne Dei decretum de rebus faciendis: neque potuit in Deo non esse, quanquam nihil extra se creare voluisset.