God did not have to harden Pharaoh's heart at first. Pharaoh hardened it himself as shown in the Scriptures already given.
I don't get it. Why wouldn't we just follow what the Bible says as it appears in a timeline order? And here is what the Bible says:
1) - Genesis 41:28, 32 NKJV - 28 "This is the thing which I have spoken to Pharaoh.
God has shown Pharaoh what He is about to do. ... 32 "And the dream was repeated to Pharaoh twice because
the thing is established by God, and
God will shortly bring it to pass."
Next, Exodus chapter four is where the word "harden" first appears (in the Bible) in relation to the human heart. God introduces it this way:
2) - Exodus 4:21 NKJV - 21 "And the LORD said to Moses, "When you go back to Egypt, see that you do all those wonders before Pharaoh which I have put in your hand. But
I will harden his heart, so that he will not let the people go."
11 or 12 verses later, there is no mention of Pharaoh hardening his own heart, but what we do find is that Pharaoh refuses to let Israel go, hence, a hardened heart, which is exactly what God told Moses He would do to Pharaoh.
Exodus 5:1-2 NKJV - 1 "Afterward Moses and Aaron went in and told Pharaoh, "Thus says the LORD God of Israel: 'Let My people go, that they may hold a feast to Me in the wilderness.' " 2 And Pharaoh said, "Who is the LORD, that I should obey His voice to let Israel go? I do not know the LORD,
nor will I let Israel go."
This is exactly what God said he would do in Genesis chapter 41. God hardened Pharaoh's heart SO THAT (there's that phrase again) Pharaoh would not let Israel go. As said, 11 or 12 verses later, that's exactly what happened.
If this doesn't make sense, then I am utterly bedazzled as to why. As for Pharaoh's heart being hardened, here are the remaining Scriptures:
Exodus 7:3 NKJV - 3 "And
I will harden Pharaoh's heart, and multiply My signs and My wonders in the land of Egypt.
God = 2
Exodus 8:15 NKJV - 15 "But when Pharaoh saw that there was relief,
he hardened his heart and did not heed them, as the LORD had said."
Pharaoh = 1
Exodus 8:32 NKJV - 32 "But
Pharaoh hardened his heart at this time also; neither would he let the people go."
Pharaoh = 2
Exodus 9:12 NKJV - 12 "But
the LORD hardened the heart of Pharaoh; and he did not heed them, just as the LORD had spoken to Moses."
God = 3
Exodus 9:34 NKJV - 34 "And when Pharaoh saw that the rain, the hail, and the thunder had ceased, he sinned yet more; and
he hardened his heart, he and his servants."
Pharaoh = 3
Exodus 10:1 NKJV - 1 "Now the LORD said to Moses, "Go in to Pharaoh; for
I have hardened his heart and the hearts of his servants, that I may show these signs of Mine before him"
God = 4
Exodus 10:20 NKJV - 20 "But
the LORD hardened Pharaoh's heart, and he did not let the children of Israel go."
God = 5
Exodus 10:27 NKJV - 27 "But
the LORD hardened Pharaoh's heart, and he would not let them go."
God = 6
Exodus 11:10 NKJV - 10 "So Moses and Aaron did all these wonders before Pharaoh; and
the LORD hardened Pharaoh's heart, and he did not let the children of Israel go out of his land."
God =7
Exodus 14:4 NKJV - 4 "Then
I will harden Pharaoh's heart, so that he will pursue them; and I will gain honor over Pharaoh and over all his army, that the Egyptians may know that I [am] the LORD." And they did so."
God =8
Exodus 14:8 NKJV - 8 "And
the LORD hardened the heart of Pharaoh king of Egypt, and he pursued the children of Israel; and the children of Israel went out with boldness."
God =9
And as for the rest of Egypt, the Lord hardened their hearts as well.
Exodus 14:17 NKJV - 17 "And
I indeed will harden the hearts of the Egyptians, and they shall follow them. So I will gain honor over Pharaoh and over all his army, his chariots, and his horsemen."