Abba Poemen used to say, “Satan has three kinds of power which precede all sin. The first is error, the second is neglect (or laxity), and the third is lust. When error has come it produces neglect, and from neglect springs lust, and by lust man fell; if we watch against error neglect will not come, and if we be not negligent, lust will not appear, and if a man works not lust, he will, through the help of Christ, never fall.

[Apophthegmata Patrum]