The sacrificial love of God through Christ protects the believing heart from the touch of evil.

“I am the Good Shepherd. The Good Shepherd puts the sheep before himself, sacrifices himself if necessary. A hired man is not a real shepherd. The sheep mean nothing to him. He sees a wolf come and runs for it, leaving the sheep to be ravaged and scattered by the wolf. He’s only in it for the money. The sheep don’t matter to him.”
John 10:11-13, MSG