It is not easy to heal human "evil" with the purpose of producing hope and redemption. It's very risky. It requires deep selflessness and purification by the grace of God.
In dealing with "evil" people, we'd always face a dilemma. Consider one, for example, who hurts, betrays, or deceives you. How do you respond for healing of the "evil" to take place? Many times, we could not find it in our heart to love unconditionally those who do "evil" to us. Would it not be evil itself to love evil or affirm one who has done evil?
"Evil" is ugly. Yet Jesus Himself came to embrace that ugliness of human "evil" to save us.
Romans 5: 8 says, "But God demonstrates His own love toward us, in that while we were yet sinners, Christ died for us."
"For God so loved the world that He gave His only begotten Son that whosoever believes in Him shall not perish but have eternal life" (John 3:16).
Christian psychiatrist Dr. M. Scott Peck wrote these words in his book, "People of the Lie": "The healing of evil - scientifically or otherwise - can be accomplished only by the love of individuals. A willing sacrifice is required. The individual healer must allow his or her own soul to become the battleground. He or she must sacrificially absorb the evil."
Frankly, I do not know exactly how this takes place. It's a mysterious formula. Allowing one's self to be pierced by the "evil" of another, one who is a victim then becomes a victor.
"When a willing victim who had committed no treachery was killed, " writes C.S. Lewis, " in a traitor's stead, the table would crack and death itself would start working backwards."
Whenever such happens, healing of human "evil" occurs. There then emerges a shift in the balance of power in the world.