Exodus 3:19

3:19 But I know that the king of Egypt will not let you go, not even under force.

Exodus 9:30

9:30 But as for you and your servants, I know that you do not yet fear the Lord God.”

Exodus 18:11

18:11 Now I know that the Lord is greater than all the gods, for in the thing in which they dealt proudly against them he has destroyed them.”