Futile Thinking by Ignoring God

For although they knew God, they neither glorified him as God nor gave thanks to him, but their thinking became futile and their foolish hearts were darkened. ~ Romans 1:21 (NIV)

Don't Become Well-Adjusted (What?)

So here's what I want you to do, God helping you: Take your everyday, ordinary life—your sleeping, eating, going-to-work, and walking-around life—and place it before God as an offering. Embracing what God does for you is the best thing you can do for him. Don't become so well-adjusted to your culture that you fit into it without even thinking. Instead, fix your attention on God. You'll be changed from the inside out. Readily recognize what he wants from you, and quickly respond to it. Unlike the culture around you, always dragging you down to its level of immaturity, God brings the best out of you, develops well-formed maturity in you.
~ Romans 12:1-2 (TM)

Mature Thinking

Brothers, do not be children in your thinking. Be infants in evil, but in your thinking be mature. ~ 1 Corinthians 14:20 (ESV)