The scriptures give us instructions on how we should think. And if we believe that the scriptures give us good instructions for life, there must a purpose and reason for thinking as instructed.

Philippians 4:8 “Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things.”

The word “think” here is the Greek word logizomai which can also means to calculate or figure or weigh the reasons.  Philippians 4 tells us how to think, that we...