Now, I don't mean that we should really give him a second chance,.. I mean since I do believe that all demons were once angels why can't they revert back? This comes from a character I invented that's half-demon (since her mother was a succubus) who wants to do good and wants to feel emotion like love. Even though it's just a story, I sort of wonder if this could ever happen. I mean I think that a succubus is just basically folklore, but why can't demons choose to do again? Btw, this is for all of you who don't know what a succubus is.
Scriptural answer? Forgiveness can only be offered if the individual who commits the wrong/sin repents and asks for forgiveness. Example: "Take heed to yourself. If your brother sins against you, rebuke him; and if he repents, forgive him. If he sins against you seven times in a day, and seven times returns to you to say, 'I repent,' you shall forgive him." -- Luke 17:3-4.
What of the person who wants forgiveness but refuses to repent or has placed himself into a situation where its impossible to repent, i.e., turn away from the sin in question? "Lest there be any fornicator or profane person like Esau, who for one morsel of food sold his birthright. For you know that afterward, when he wanted to inherit the blessing, he was rejected, for he found no place for repentance, though he sought it diligently with tears." -- Heb. 12:6-7 Without a change toward sin and a change in behavior, a debt of sin can never be forgiven.
The simple answer: The Devil and the angels that followed him that worshiped him instead of God have never changed since the beginning when they first rebelled against God. "You are of your father the devil, and the desires of your father you want to do. He was a murderer from the beginning, and does not stand in truth, because there is no truth in him. When he speaks a lie, he speaks from his own resources, for he is a liar and the father of it." -- John 8:44
Satan/the Devil.........continues to be a lair and the scriptures clearly detail the prerequisites for salvation, i.e, a new birth, to be BORN AGAIN, sin free, one must WORSHIP IN SPIRIT AND TRUTH. (John 4:24).
God being God.......and Satan being Satan.......one of the CREATED, God most assuredly knows the very thoughts of His creations. That's way Satan can't repent........its impossible to lie to God. As the scriptures point out, God can discern the very thoughts of those He created, "And God saw that the wickedness of man was great in the earth; and that every imagination of the thoughts of his heart was only evil continually. And it repented the Lord that He had made man on earth; and it grieved Him at His heart." -- Genesis 6:5-6
