In Matthew 16:19, Jesus gives Peter binding/loosing authority; here Jesus extends that authority to all disciples for forgiveness of sins.

In Matthew 18:18, Jesus gives the church binding/loosing authority; here that authority is specifically applied to forgiving or retaining sins.

Mark 2:5-10 records Jesus forgiving sins and claiming authority; here he delegates that same authority to his disciples.

Acts 2:38 shows Peter exercising the authority given here — calling for repentance and baptism for forgiveness of sins.

2 Corinthians 2:6-10 shows the church forgiving a repentant sinner, applying the authority to forgive from John 20:23.

1 Timothy 1:20 shows Paul handing offenders to Satan, a direct example of the authority to retain sins in John 20:23.

Luke 5:24 shows Jesus' own authority to forgive sins, which he delegates to the disciples in John 20:23.

2 Corinthians 2:10 echoes the apostolic authority to forgive, as Paul forgives with the church, aligning with John 20:23.

Acts 13:38 shows the apostles proclaiming forgiveness through Jesus, directly applying the authority given to declare sins forgiven.

Ephesians 1:7 grounds forgiveness in Christ's blood — the source of what the disciples are authorized to declare.