Exodus 9:16, 34
Exodus 9:16 NASB1995
But, indeed, for this reason I have allowed you to remain, in order to show you My power and in order to proclaim My name through all the earth.
Exodus 9:34 NASB1995
But when Pharaoh saw that the rain and the hail and the thunder had ceased, he sinned again and hardened his heart, he and his servants.