The cause of our salvation is the loving choice of God, and redemption is the necessary execution for its effective realization, that is, even if there were elections, there could be no salvation without the remitted, redeeming act of our Lord Jesus Christ. So we can affirm, that salvation is the act of God for us in Jesus Christ. Without the work of Jesus there would be no salvation, any future heaven and glorious life.
There is a guilt and a prison of which we must first, be forgiven and freed, so that we can be received as children of God.
The spirit of a servant of God can not be found enslaved by any other lord, especially if this one is sin and the devil.
And he who does not have his debt of sins to God taken away, can not remain in his presence in the condition of accepted and loved son. However, as we see in Luke 24:47, Acts 2:38, and other passages are needed, repentance and faith to be benefited by remission. And once redeemed they will continue to be necessary for the blood of Jesus to benefit us in our purification.
Let us always remember that: the blood of Jesus will always be effective only where there is repentance and faith.
In the Old Testament the remission was generally effected by an act of purchase in money, not to redeem the property in the name of the one that was already in his possession, but of the one to whom the property originally belonged and by right. We have in this a figure of our redemption through Jesus Christ, who bought us not with money, but with his blood, so that we return to the total possession of God-our Creator, the One who has full rights over us. We are, therefore, a property of God, redeemed and rescued from Him through Jesus (Rev 5,9).
Jesus paid the full price of our redemption, so that we have nothing to pay for our salvation, even because we did not have to liquidate the high price demanded by justice and the holiness of God, for our redemption. This is the reason for being free for us, because it cost Jesus a high price.
In the end we did not belong, even before the fall into sin, because man was created to be property of Jesus Christ and of God the Father.
God could never be frustrated in his eternal purpose of having many children like Christ, then the obvious of sin must be overcome by the ransom performed by the Lord, so that such a purpose could be fulfilled.
We were not sold by God to anyone, when we sin.
We simply lose possession of our eternal inheritance because of sin, but in Jesus Christ, for the price that He paid with His sacrifice, we were rescued from the curse of the Law, from eternal damnation, from eternal misery, and we were reintroduced by the hope and faith, to the possession of all that God planned to grant to those who love him.
The purpose of redemption, that is, its purpose, according to God, is to free those who were imprisoned so that they could enjoy the freedom of true children of God.
The cause of the loss of our inheritance was not Satan, but our own sin. And this sin could not be covered with silver or gold, but only with the blood of Jesus.
Thus, Satan has no part in this transaction that takes place between God the Father, our Lord Jesus Christ, and us sinners. God does not have to give any satisfaction to the devil to free any soul that is under his malign influence.
Remember that the devil himself and all the demons are also creatures of God, and they are already condemned by Him to eternal suffering in the lake of fire and brimstone.
But those who have been redeemed by Christ await the final redemption with the resurrection of their bodies on the occasion of the rapture of the Church, when the Lord will come to gather all his flock, of all times, in the heavenly fold.