Repetition is important in teaching! So is prayer.
Renewal of one's mind can transform one's mindset! (Romans 12:12)
Did the Preacher learn, if a mindset of wisdom doesn't give God glory it is vanity?
Wisdom without faith is also vanity of vanities---a striving after the wind. What lies within your mind and heart counts and is visible to others in your actions.
Mindset does matter. But it's not a one-time end all.
When all has been heard, the end of the matter is, "Fear God and keep His commandments for this is the whole duty of man". (Ecclesiastes 12:13)
