'Redemption' in the Bible

In Him we have redemption [that is, our deliverance and salvation] through His blood, [which paid the penalty for our sin and resulted in] the forgiveness and complete pardon of our sin, in accordance with the riches of His grace

The Spirit is the guarantee [the first installment, the pledge, a foretaste] of our inheritance until the redemption of God’s own [purchased] possession [His believers], to the praise of His glory.

And do not grieve the Holy Spirit of God [but seek to please Him], by whom you were sealed and marked [branded as God’s own] for the day of redemption [the final deliverance from the consequences of sin].