What would we expect of someone who feeds only on fast food and unhealthy snacks filled with sugar and fats? A healthy body? Long life? No, we would expect physical health to be largely the product of physical intake. Is it any different in the spirit?
Modern culture is saturated with unhealthy spiritual food—from the lusts of the flesh and the eyes, to the human pride of the self-life, to elaborate and deceptive worldviews and philosophies. Hundreds of television channels, dozens of newspapers and magazines, unlimited cyberspace images, and a number of other media compete for our attention. We let many of them actually win our attention. And much of what we feed on is unhealthy. In our pursuit of wisdom, our minds often hunger for genuine nutrition.
"You are what you eat" applies not only in the physical world, but also in the spiritual. There's no way to take in junk without becoming junky.
God calls us to watch our diets. It pleases Him when we care for His temple, our bodies. But it pleases HIm much more when we care for our minds. Our thought life is where His Spirit most prefers to work, shaping uncluttered hearts and imparting wisdom to uncluttered minds. Even so, we do not make a smooth highway for Him into our souls. Through our entertainment, we let ourselves be bombarded by an incessant PR campaign for the ways of the world. Find a balance. Watch what goes into your mind. Without hindrance, let His thoughts nourish you.
Adapted from The One Year® Walk with God Devotional by Chris Tiegreen, Tyndale House Publishers (2004)