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: Hardened his heart - God suffered his natural obstinacy to prevail, that he might have farther opportunities of showing forth his eternal power and Godhead.
Related Commentaries of Exodus 10:1
Exodus 10:1
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: