This shows you how to protect yourself from any individual who has harmed you and you realize that Revenge is God’s, not yours. This keep you out of harm’s way plus this shows you how to return their negative energy to them. The evil doer will not like the results when their face their own energy and they cannot get out of it’s way. This teaches us all to send love out, even to our enemies, and feel the reward when that loves comes back to us. Protect yourself.