Exodus 10:1

10:1 Yahweh said to Moses, "Go in to Pharaoh, for I have hardened his heart, and the heart of his servants, that I may show these my signs in the midst of them,
-World English Bible

Other Translation

10:1 And the LORD said unto Moses, Go in unto Pharaoh: for I have hardened his heart, and the heart of his servants, that I might shew these my signs before him:
-King James Version