The Bible leaves some details hidden
This is a fair question, and Scripture does not give a full account of how angels fell or what every fallen angel has thought and chosen since then. The Bible never shows Satan coming to God in sorrow, asking for pardon, and being turned away. So we should not invent a story where God has explicitly refused a repentant devil.
Still, the passages that do speak about fallen angels use final language. Jude says that angels who left the place God assigned them are kept for the judgment to come. Peter also describes angels who sinned as being held for judgment. The picture is not of a rebellion gradually being healed, but of one whose sentence has been declared (Jude 1:6; 2 Peter 2:4).
And the angels which kept not their first estate, but left their own habitation, he hath reserved in everlasting chains under darkness unto the judgment of the great day.
Satan’s opposition is not treated as a mistake
The Bible portrays Satan as a deceiver and an enemy of God’s people, not as someone moving towards humility and trust. Revelation identifies him with the ancient serpent who deceives the world, then later describes his final punishment as certain (Revelation 12:9; Revelation 20:10).
That may sound severe, but the Bible does not treat evil as a minor misunderstanding that can simply be ignored. God’s judgment is part of his commitment to truth, goodness, and the people evil harms. A world where Satan’s lies and destruction go on unchecked would not be a world where love has won.
And the devil that deceived them was cast into the lake of fire and brimstone, where the beast and the false prophet are, and shall be tormented day and night for ever and ever.
Jesus came to save human beings
The clearest biblical difference is found in the incarnation. God the Son took human flesh and shared in human weakness, death, and suffering so that he could break death’s power (Hebrews 2:14). He did not become an angel. His saving help is described as being for Abraham’s offspring, the human family through whom God promised blessing to the nations (Hebrews 2:16).
This does not mean God is less just towards angels or that his compassion has limits. It means that Scripture reveals a particular rescue: Jesus entered our human condition and made a way for people to be brought back to God. The Bible gives no matching promise of redemption for fallen angels.
For verily he took not on him the nature of angels; but he took on him the seed of Abraham.
God’s invitation to people is open now
This question can become very personal. Someone may wonder, “If God judges rebellion, is there hope for me?” The New Testament answers with a strong yes. God is patient with people and calls them to turn from sin rather than perish (2 Peter 3:9).
Satan’s final judgment is not the pattern for a person who comes honestly to Christ. Jesus welcomes sinners, and his death and resurrection are good news for those who know they need mercy. You do not need every mystery about angels solved before you pray, ask for forgiveness, or begin trusting God.