Likutei Moharan 10:2/ליקוטי מוהר"ן י׳:ב׳

12. For the essence of God’s greatness is that the idolators, as well, should know there is an Almighty who rules and governs [the world]. As it is brought in the Zohar (II, 69a): When Yitro came, he said, “Now I know that God is great.” With this His Name grew greater and more exalted <above and below>.