In Romans, Paul says that that “the mind governed by the flesh is hostile to God; it does not submit to God’s law, nor can it do so” (NIV 8:5-7). That’s because the brain, the “mind governed by the flesh,” is not capable of abandoning the self-centered, survival instincts that have evolved over millennia.
But, praise God, our human individuality is greater than these natural, brain-centered processes. Many “near death” experiences show consciousness to be separate from the brain and so does some neurological research. We are either opening ourselves more and more to higher consciousness, Christ consciousness, or we are allowing the brain to run our lives and make our choices.
Human consciousness clearly is “the mind governed by the Spirit” that St. Paul refers to (NIV Rom. 8:6).