Forgiveness is an act of the will, and the will can function regardless of the temperature of the heart.

To forgive is to have faith in God – that His judgments are true and righteous.

To hold unforgiveness against someone is like taking poison and waiting for them to die.

To forgive is to set a prisoner free and discover that the prisoner was you.

The Imprecatory Psalms

How the Psalms can help to find a way to deal with feelings of anger, hatred and revenge.

http://truthinreality.com/2014/01/20/should-christians-pray-the-imprecatory-psalms/

What the Bible Says about Forgiveness

“And whenever you stand praying, if you have anything against anyone forgive him, that your Father in heaven may also forgive you your trespasses. But if you do not forgive, neither will Your Father in heaven forgive your trespasses.”   (Mark 11:25-26)

“Recompense to no man evil for evil. Provide things honest in the sight of all…