Matthew 18:18

2 Corinthians 2:10 NIV
Anyone you forgive, I also forgive. And what I have forgiven—if there was anything to forgive—I have forgiven in the sight of Christ for your sake,

John 20:23 NIV
If you forgive anyone’s sins, their sins are forgiven; if you do not forgive them, they are not forgiven.”

Matthew 16:19 NIV
I will give you the keys of the kingdom of heaven; whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven.”