#5) Romans 12:2

"And do not be conformed to this world, but be transformed by the renewing of your mind, so that you may prove what the will of God is, that which is good and acceptable and perfect." 

Learning

This verse is all about learning.  In order to avoid being conformed to this world, we have to renew our minds, and we do this by learning God's truths through Bible study.  Then we will have the maturity to discern God's will, and to please Him with what is good, acceptable, and perfect.
In John 14:15, Jesus said, "If you love me, you will obey what I command."  However, how can we obey his commandments if we don't first learn what they are?  We're not born with an inherent wisdom of the Bible, and God doesn't supernaturally zap our brains with the information that He wants to reveal to us.  Instead, He transforms us by the renewing of our minds as we study His Word.  We should have our minds set on the Spirit (Romans 8:6), and learn what is pleasing to the Lord (Ephesians 5:17). 

In Colossians 1:9-10, we see that God wants us to strive for "the knowledge of His will through all spiritual wisdom and understanding," so that we will "live a life worthy of the Lord and may please him in every way: bearing fruit in every good work, growing in the knowledge of God." 

We are to take every thought captive (2 Corinthians 10:5) because the mind is more important than the flesh (2 Corinthians 5:4, 7, 1 Timothy 4:8).  Proverbs 4:7 tells us that wisdom is the most important thing.