I remember a game we used to play in phys. ed., during the wrestling unit. There was a circle on the mat, and the object of the contest was to knock your opponent off balance and get some portion of his body to touch outside the designated circle - the goal was to stand your ground - and, as you can imagine, that was anything but passive! It works the same with Satan - he’s trying to get us off balance; make us step outside the realm of obedience to God and touch down in his realm of sin. The struggle is anything but passive.