Exodus 10:1-2

GOD said to Moses: “Go to Pharaoh. I’ve made him stubborn, him and his servants, so that I can force him to look at these signs and so you’ll be able to tell your children and grandchildren how I toyed with the Egyptians, like a cat with a mouse; you’ll tell them the stories of the signs that I brought down on them, so that you’ll all know that I am GOD.”