Above all else, guard your heart, for it is the wellspring of life.
- Proverbs 4:23, NIV
"Once an idea has taken hold of the brain it is almost impossible to eradicate."
If that sounds familiar to you at all, that's because it's a line from Inception (which is one of my favorite movies, by the way). Throughout it, the movie emphasizes the strength of ideas and the power of our thoughts.
If you need an example for just how powerful and binding thoughts can be, we need to look no further than our own spiritual lives: How about sin? After all, it has to start somewhere - and sin starts in the mind.
In Mark, Jesus says:
"What comes out of a man is what makes him 'unclean.' For from within, out of men's hearts, come evil thoughts, sexual immorality, theft, murder, adultery, greed, malice, deceit, lewdness, envy, slander, arrogance and folly. All these evils come from inside and make a man 'unclean.'" (Mark 7:20-23, NIV)
But it doesn't stop there. "The smallest seed of an idea can grow," says Dom Cobb (played by Leonardo DiCaprio) in Inception. "It can grow to define or destroy you." These sinful thoughts - these seeds - germinate and grow into the poison flower of sinful action.
but each one is tempted when, by his own evil desire, he is dragged away and enticed. Then, after desire has conceived, it gives birth to sin; and sin, when it is full-grown, gives birth to death. (James 1:14-15, NIV)
Because "an idea is like a virus - resilient, highly contagious," (yes, that's another Inception quote) we need to make sure that the ideas in our head are pure. We have safeguards we can put up against sinful thoughts - mainly, focusing on Christ.
But this isn't easy. The devil and the world are always seeking to bring us down, to take our thoughts off of the Christ we strive to follow. They want to see us trip up, they want to see us fail, they want to see us stray. And where does this start? The mind, of course.
But I am afraid that as the serpent deceived Eve by his cunning, your thoughts will be led astray from a sincere and pure devotion to Christ. (2 Corinthians 11:3, ESV)
We have to be proactive and assertive in maintaining a mindset of Christ because it goes against our sinful nature. Like training for a sport, we need to build up our mental muscle memory, through repetition and practice. Restraining our thoughts requires definitive action, constant effort, relentless vigilance.
We destroy arguments and every lofty opinion raised against the knowledge of God, and take every thought captive to obey Christ. (2 Corinthians 10:5, ESV)
Taking every though captive - this is a hostage situation. We "capture [our] rebellious thoughts," as it says in the New Living Translation. Taking our thoughts captive means an ambush, a storming of our own Bastille. It means taking sin's legs out from under it, catching it off guard, before it gets the chance to set up camp in our minds. It means letting the devil know who is boss, and it's not him - it's Him.)
"Whatever you resist persists because it keeps your attention," tweeted Rick Warren, author of A Purpose-Driven Life and pastor of Saddleback Church. "Instead, REFOCUS on something else to defeat a temptation."
The mind is an amazing thing that God created, and it does amazing things. The brain, part of our central nervous system, is our body's "command center." (That's the extent of my knowledge about the nervous system, so don't ask questions.) It's the engine that drives our cognitive vehicle. That said, if Satan doesn't have our thoughts, then he has no foothold. If he can't reach the steering wheel of our mind, he isn't able to drive us off course.
Throughout Scripture we see this point emphasized, the importance of thinking pure thoughts.
I will ponder the way that is blameless. (Psalm 101:2a, ESV)
For those who live according to the flesh set their minds on the things of the flesh, but those who live according to the Spirit set their minds on the things of the Spirit. (Romans 8:5, ESV)
And now, dear brothers and sisters, one final thing. Fix your thoughts on what is true, and honorable, and right, and pure, and lovely, and admirable. Think about things that are excellent and worthy of praise. (Philippians 4:8, NLT)
Taking our thoughts captive, focusing on the things of Christ instead of the things of this world...
Now that's something to think about.