Parallel
Exodus 10:1
Brenton's English Septuagint · Berean Standard Bible
And the Lord spoke to Moses, saying, Go in to Pharao: for I have hardened his heart and the heart of his servants, that these signs may come upon them; in order
Then the LORD said to Moses, “Go to Pharaoh, for I have hardened (note: Or made heavy) his heart and the hearts of his officials, that I may perform these miraculous signs of Mine among them,