The devil is never after the NEW man. the new man is too powerful. The new man is IN Christ. He is after the “OLD”. man (you know the one, the man that should be dead.)
The devil wants to ressurect the man that died with Christ so he can resurrect old things, old habits, and old thought processes to disturb the NEW man and keep him from taking his place in Christ and to keep him from flourishing and producing fruit.