Henry D. Taylor said,
One cannot hold grudges and unkind feelings without harming himself. He becomes bitter; his vision is distorted; and his soul becomes cankered. Harsh and sharp words can leave a sting behind, a pang of unhappiness and regret in the heart and conscience of the offender.
‘Little, vicious minds abound with anger and revenge and are incapable of feeling the pleasure of forgiving their enemies,’ said a wise man.
A person holding grudges hurts himself more than he does his enemy. A prophet has wisely counseled: ‘. . . let not the sun go down on your wrath’ (Ephesians 4:26). (Henry D. Taylor, “…To Forgive Is Divine”, General Conference, October 1962)