Proverbs 3:7-8
Do not be wise in your own eyes; fear the Lord (with reverent awe and obedience) and turn away from evil. It will be health to your body (your marrow, your nerves, your sinews, your muscles-all your inner parts) and refreshment to your bones. 

Pride, sin, and turning away from the fear of God and from following His commandments will harm our health. When we keep God’s commandments before our eyes, it is harder to forget and misstep. Renewing our mind brings clarity to every situation and allows God to speak wisdom into our lives.