Exodus Chapter 7, Verse 14

14: And the LORD said unto Moses, Pharaoh's heart is hardened, he refuseth to let the people go.- edit KJV text
14: And the Lord said to Moses: Pharao's heart is hardened, he will not let the people go.— edit Douay text
14: and the Lord said to Moses, The heart of Pharao is made hard, so that he should not let the people go.— edit LXX text