How does the enemy use gradual compromise rather than sudden rebellion to pull believers away from the Light friends?

The devil speaks to our mind because it's a simple way of communication with humans. Everything, good or evil starts in the mind and continue growing when we water it, that is, thinking about it often and considering it over and over until it takes root in our hearts.

Most Christians are ready for sudden attacks from the devil, but he is too cunning, he starts from your mind and changes the way you think.