The child of the manger became a man who would deal with evil; this is why He cast out demons.  He drove them out by legions.  Demonic powers incited political and religious powers against Him. He spoke forgiveness from the cross to those manipulated by these powers.  He took the brunt of evil upon Himself on the cross and by it, defeated evil.  He chose the weapons of love over hate and humility over arrogance.  He won!  These weapons are ours!

“And I will put enmity between you and the woman, And between your seed and her seed; He shall bruise you on the head, And you shall bruise him on the heel.” Genesis 3:15 (NASB)