Ephesians 6:10-12 10Finally, be strong in the LORD and in his mighty power. 11Put on the full armor of God, so that you can take your stand against the devil's schemes. 12For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms.
Aman is foolish when he identifies specific individuals around him, in his family, at work or elsewhere as his enemies. He keeps malice with them. He operates in unforgiveness, hatred and other things towards them.
And the devil laughs at man. The Bible says our contention is not against flesh and blood (human beings). Neither is our weapon physical. All of it is spiritual.