Deuteronomy 2:30
But Sihon, the king of Heshbon, would not let us pass by him; for the LORD thy God had hardened his spirit and made his heart tough because he would deliver him into thy hands as it is come to pass this day.
Exodus 4:21
And the LORD said unto Moses, "When thou art come into Egypt again, see that thou do all the wonders before Pharaoh which I have put in thy hand: but I will harden his heart, so that he shall not let the people go.
Numbers 21:23
And Sihon would give Israel no license to pass through his country, but gathered all his people together and went out against Israel into the wilderness. And he came to Jahaz and fought with Israel.
Exodus 11:10
And Moses and Aaron did all these wonders before Pharaoh. But the LORD hardened Pharaoh's heart, so that he would not let the children of Israel go out of his land.
Joshua 11:19-20
for there was no city that made peace with the children of Israel, save those Hittites that inhabited Gibeon. All other they took with battle,
Judges 11:20
But Sihon trusted not Israel, to go through his coasts: but gathered all his people together and pitched in Jahaz, and fought with Israel.
Isaiah 48:4
Howbeit, I knew that thou art obstinate, and that thy neck hath an iron vein, and thy brow is of brass.
Romans 9:17-23
For the scripture saith unto Pharaoh, "Even for this same purpose have I stirred thee up, to show my power on thee, and that my name might be declared throughout all the world."