What does it mean "LORD hardened the heart of Pharaoh"?

• God can never Sin and God can never initiate Sin.

Jam 1:13-15 "Let no man say when he is tempted, I am tempted of God: for God cannot be tempted with evil, neither tempteth he any man: 14But every man is tempted, when he is drawn away of his own lust, and enticed. 15Then when lust hath conceived, it bringeth forth sin: and sin, when it is finished, bringeth forth death."

• We are by nature have hardened hearts and unbelieving hearts. The Bible also makes reference to a dead heart as a “hard heart”, or a “hardened heart”. And the thrust of these words has to do with rebellion or stubbornness against God and His Word, the Bible. God softens the hearts of those whom he saves.

Jer 17:9 "The heart is deceitful above all things, and desperately wicked: who can know it?"

Mark 7:21-23 "For from within, out of the heart of men, proceed evil thoughts, adulteries, fornications, murders, 22Thefts, covetousness, wickedness, deceit, lasciviousness, an evil eye, blasphemy, pride, foolishness: 23All these evil things come from within, and defile the man."

Rom 2:4-5 "Or despisest thou the riches of his goodness and forbearance and longsuffering; not knowing that the goodness of God leadeth thee to repentance? 5But after thy hardness and impenitent heart treasurest up unto thyself wrath against the day of wrath and revelation of the righteous judgment of God;"

Eze 36:26-27 "A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh. 27And I will put my spirit within you, and cause you to walk in my statutes, and ye shall keep my judgments, and do them."

• God can restrain sin (in saved or unsaved individuals) or let go sin loose but can never initiate sin. Man is accountable for his own sin. If God did not restrain sin, mankind would destroy themselves. God can withhold His hand of restraint, and that person’s heart will be hardened. Being Omniscient, God uses man's sinful intentions for His purpose.

Gen 20:3-6 "But God came to Abimelech in a dream by night, and said to him, Behold, thou art but a dead man, for the woman which thou hast taken; for she is a man's wife. 4But Abimelech had not come near her: and he said, LORD, wilt thou slay also a righteous nation? 5Said he not unto me, She is my sister? and she, even she herself said, He is my brother: in the integrity of my heart and innocency of my hands have I done this. 6And God said unto him in a dream, Yea, I know that thou didst this in the integrity of thy heart; for I also withheld thee from sinning against me: therefore suffered I thee not to touch her."

Rom 1:23-26 "And changed the glory of the uncorruptible God into an image made like to corruptible man, and to birds, and fourfooted beasts, and creeping things. 24Wherefore God also gave them up to uncleanness through the lusts of their own hearts, to dishonour their own bodies between themselves: 25Who changed the truth of God into a lie, and worshipped and served the creature more than the Creator, who is blessed for ever. Amen. 26For this cause God gave them up unto vile affections: for even their women did change the natural use into that which is against nature:"

2 Thess 2:10-12 "And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved. 11And for this cause God shall send them strong delusion, that they should believe a lie: 12That they all might be damned who believed not the truth, but had pleasure in unrighteousness."

• The purpose of God according to election might stand - God opens the eyes and ears of His Elect and softens the hearts of His Elect. God's Elect are the vessels of Mercy and vessels of Honor.

John 12:37-41 "But though he had done so many miracles before them, yet they believed not on him: 38That the saying of Esaias the prophet might be fulfilled, which he spake, Lord, who hath believed our report? and to whom hath the arm of the Lord been revealed? 39Therefore they could not believe, because that Esaias said again, 40He [God] 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. 41These things said Esaias, when he saw his glory, and spake of him."

Matt 11:25 "At that time Jesus answered and said, I thank thee, O Father, Lord of heaven and earth, because thou hast hid these things from the wise and prudent, and hast revealed them unto babes."

Matt 16:15-17 "He saith unto them, But whom say ye that I am? 16And Simon Peter answered and said, Thou art the Christ, the Son of the living God. 17And Jesus answered and said unto him, Blessed art thou, Simon Barjona: for flesh and blood hath not revealed it unto thee, but my Father which is in heaven."

Rom 9:10-23 "And not only this; but when Rebecca also had conceived by one, even by our father Isaac; 11(For the children being not yet born, neither having done any good or evil, that the purpose of God according to election might stand, not of works, but of him that calleth;) 12It was said unto her, The elder shall serve the younger. 13As it is written, Jacob have I loved, but Esau have I hated. 14What shall we say then? Is there unrighteousness with God? God forbid. 15For he saith to Moses, I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion. 16So then it is not of him that willeth, nor of him that runneth, but of God that sheweth mercy. 17For the scripture saith unto Pharaoh, Even for this same purpose have I raised thee up, that I might shew my power in thee, and that my name might be declared throughout all the earth. 18Therefore hath he mercy on whom he will have mercy, and whom he will he hardeneth. 19Thou wilt say then unto me, Why doth he yet find fault? For who hath resisted his will? 20Nay but, O man, who art thou that repliest against God? Shall the thing formed say to him that formed it, Why hast thou made me thus? 21Hath not the potter power over the clay, of the same lump to make one vessel unto honour, and another unto dishonour? 22What if God, willing to shew his wrath, and to make his power known, endured with much longsuffering the vessels of wrath fitted to destruction: 23And that he might make known the riches of his glory on the vessels of mercy, which he had afore prepared unto glory,"