Just as Boaz was a kinsman-redeemer to Ruth in the Old Testament, Jesus Christ will return in the last days to redeem the earth from its curse and bondage under the control of Satan.
The Old Testament law provided for a kinsman redeemer to repurchase a relative's property that had been forfeited to a lender.

This principle is illustrated in the Bible when Boaz, an ancestor of Jesus, redeemed Ruth.
Man's transfer of his dominion allowed Satan to become the prince of this world and the king of the evil kingdom.

From that moment man has been living in enemy-occupied territory and waiting for the return of our Messiah.
Man joined in Satan's rebellion against God when Adam and Eve sinned in  the Garden of Eden.

God gave the stewardship of the planet to man.

In a sense, man's sinful rebellion had the effect of mortgaging the dominion of earth to Satan.
When Jesus rose from the grave, openly triumphanting over Satan, He defeated death.

He resurrected a great group of Old Testament saints to prove His victory over death and sin (Matthew 27:52-53).