How do we know God can forgive sin?

The forgiveness of sin by God is rooted in His justice and holiness, which demands that sin be paid for. This payment was accomplished through the sacrificial death of Jesus Christ, who bore the punishment for sin on behalf of His people. Romans 3:24-26 teaches that we are justified freely by His grace through the redemption that is in Christ Jesus, serving as a propitiation for our sins. The righteousness of God was upheld as sin was dealt with, allowing Him to be both just and the justifier of the one who has faith in Jesus. This foundational truth reassures believers of the merciful nature of God, who desires to forgive and restore.