Isaiah 43:1 (AMP)
BUT NOW [in spite of past judgments for Israel’s sins], thus says the Lord, He Who created you, O Jacob, and He Who formed you, O Israel: Fear not, for I have redeemed you [ransomed you by paying a price instead of leaving you captives]; I have called you by your name; you are Mine.

The heart of the gospel message is redemption, which is the deliverance from the power of another’s dominion and the resulting joy of freedom from bondage. Redemption is the message of God’s deliverance of His people from the bondage of sin by the perfect substitutionary sacrifice of Jesus Christ and their restoration to God and His kingdom.
To be redeemed is to be bought back or purchased from someone.
Christ hath redeemed us—He bought us with a price, his blood, and His life.
Christ the Redeemer! The Redeemer or Kinsman refers to the person whose right it is, as the nearest relation, to redeem or purchase back a forfeited inheritance.
The scriptures tell us in Psalm 14:2-3 that not one of us is good at all, and none of us can even seek God on our own, indeed, every human born has fallen far short of God’s glory. The only thing we’ve done is earned wages that require our eternal death, which is why we need to be redeemed, reiterated in Romans 3:10-12.
Before the birth, death, and resurrection of Christ, man redeemed one another in the OT, as seen in Leviticus 25:25, in other cases, the angel of God could redeem man according to Genesis 48:16 and sometimes, God does the redeeming by Himself according to Exodus 6:6. But Christ’s sacrificial death redeemed man once and for all.
God promises to redeem His people from bondage and death in Hosea 13:14 and their enemies in Micah 4:10.
God is committed to rescuing us from the bonds of the enemy as promised in Jeremiah 15:21. He redeems us from the kingdom of darkness into His light in I Peter 2:11. God would even rescue His people at the expense of a nation and ransom you with another nation explains Isaiah 43:1. The Lord knows your name, knows what you need, how, when you need it and assures you of His deliverance and redemption.
People need to acknowledge and understand that only God is good, then they will see the need for a Saviour. Of course, it is God alone Who grants repentance and the ability to trust in Christ.
According to Ephesians 2:8-9, we still must agree with God and cooperate in the sense that we must see ourselves as depraved sinners who are unable to save themselves by any number of good works because salvation is in no sense of ourselves but is the gift of God so that no man can boast as having worked to redeem themselves.
If you have trusted in Christ, then you realize hopefully that at one time, since we were “dead men walking,” we will have to be made alive in Christ because it is only, Christ who could and did pay the debt which He did not owe for a debt we could never pay in a billion lifetimes. That’s the grace that redeemed mankind. We are redeemed by grace, the graceful redemption offered to anyone willing and ready to receive Christ as Lord and Saviour. Be joyful that Christ purchased you with His precious blood, you belong to Him, don’t allow anyone or anything to take that from you. Say it loud and clear, I am redeemed! Psalm 107:2.
Shalom