(CG 1/039). That in God there can be no Evil (Book 1: Of God As He Is In Himself) (Summa Contra Gentiles) (Aquinas, Thomas, St.)

GOD in His goodness includes all goodnesses, and thus is the good of all good.

2. God is good by essence: all other beings by participation: therefore nothing can be called good except inasmuch as it bears some likeness to the divine goodness. He is therefore the good of all good. Hence it is said of the Divine Wisdom: There came to me all good things along with it (Wisd. vii, 11).