9 distinct Hebrew words appear in this verse.

2 passages from patristic writers, Reformers, and church catechisms citing this verse.

• 1Sam 6:6 — Wherefore then do ye harden your hearts, as the Egyptians and Pharaoh hardened their hearts? when he had wrought wonderfully among them, did they not let the people go, and they departed?
• Exod 4:21 — And the LORD said unto Moses, When thou goest to return into Egypt, see that thou do all those wonders before Pharaoh, which I have put in thine hand: but I will harden his heart, that he shall not le
• Exod 4:21 — And the LORD said unto Moses, When thou goest to return into Egypt, see that thou do all those wonders before Pharaoh, which I have put in thine hand: but I will harden his heart, that he shall not le
• Exod 8:15 — But when Pharaoh saw that there was respite, he hardened his heart, and hearkened not unto them; as the LORD had said.
• Exod 8:15 — But when Pharaoh saw that there was respite, he hardened his heart, and hearkened not unto them; as the LORD had said.
• Exod 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:
• Exod 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:
• Exod 10:20 — But the LORD hardened Pharaoh’s heart, so that he would not let the children of Israel go.
• Exod 10:27 — But the LORD hardened Pharaoh’s heart, and he would not let them go.
• Exod 14:17 — And I, behold, I will harden the hearts of the Egyptians, and they shall follow them: and I will get me honour upon Pharaoh, and upon all his host, upon his chariots, and upon his horsemen.
• Heb 3:7 — Wherefore (as the Holy Ghost saith, To day if ye will hear his voice,
• Heb 3:13 — But exhort one another daily, while it is called To day; lest any of you be hardened through the deceitfulness of sin.
• John 12:40 — He hath blinded their eyes, and hardened their heart; that they should not see with their eyes, nor understand with their heart, and be converted, and I should heal them.
• Rom 1:28 — And even as they did not like to retain God in their knowledge, God gave them over to a reprobate mind, to do those things which are not convenient;
• Rom 2:5 — But after thy hardness and impenitent heart treasurest up unto thyself wrath against the day of wrath and revelation of the righteous judgment of God;
• Rom 9:18 — Therefore hath he mercy on whom he will have mercy, and whom he will he hardeneth.
• Zech 7:11 — But they refused to hearken, and pulled away the shoulder, and stopped their ears, that they should not hear.