Romans 3:23-24 note 3
243 To redeem is to purchase back at a cost. We originally belonged to God but became lost through sin. The requirements of God's holiness, righteousness, and glory were so great upon us that it was impossible for us to fulfill them. However, God paid the price for us through Christ, repossessing us at a tremendous cost. Christ died on the cross to redeem us (Gal. 3:13; Titus 2:14; 1 Pet. 2:24; 3:18); His blood obtained eternal redemption for us (1 Pet. 1:18-19).