The First Line Of Defense...

Consider this illustration.
A succesfull military defense often involves several lines of defensive bulwarks.

No successful general would feel that any one of theses is
unimportant and should be given up without a fight.

In a Christian's fight against sin, there are several lines of defense as well.

James 1:14, 15 states that " each one is tried by being drawn out and enticed by his own desire.
Then the desire , when it has become fertile,
gives birth to sin."

The first step toward is the cultivation of a wrong desire in the mind.
Thus, the first line of defense is to refrain from cultivating the desire- to control one's thinking..

It is because of this link between thoughts and actions that the Bible warns us :
" Keep your minds fixed on the things above, not on the things upon the earth." { Colossans 3:2 }

When Christians refuse to dwell mentally on immorality, sprititism or apostasy, they make this decision ,
not because they fear that theses idea's may prove superior to Bible truths,
but because they wish to avoid anything that could draw them on a sinfull course.