Colossians 3:13:

Forbearing one another, and forgiving one another, if any man have a quarrel against any: even as Christ forgave you, so also do ye.

See also:

Forgiven People Can Be Healed
Who You Are and What You Have
Temporary Cancelation of Sin’s Consequences Through Intercession
What 1 John 1:9 Really Means
Unforgiveness Is Itself a Forgiven Sin, So How Could It Hinder My Healing?
Notes on James 5:14-16