Jacob exploit Esau weakness at a time when he was hungry. Potiphar's wife exploit Joseph station as a servant and he was cast in prison. Delilah exploited Samson's affinity for her and cost him his eyes and life.
The devil is a malevolent spirit which encapsulate evil, spiteful, revengeful, and an attacker of anything good.

The devil mode of operation is and always always is to steal, kill and or destroy.