The Bible says: "For as a man thinks in his heart, so is he." (Prov 4:23).
Therefore, we are a product of what we think. Jesus makes it very clear in Mark 7:21-23 that we think evil thoughts because our heart is evil: "And He said, what comes out of a man, that defiles a man. For from within, out of the heart of man proceed evil thoughts; adulteries, fornication, murders, theft, covetousness, wickedrness,e deceit, lewdness, an evil eye, blasphemy, pride, foolishness. All these evil things come from within and defiles a man."
It is Word of God that will tranformed the mind and heart through the workings of the Holy Spirit. Therefore, a person's value system and priorities will be changed.
The end result will be that a person's behavior, lifestyle , attitudes, and choices will be radically changed as a person sees God's perspective on Life! The Word of God will disclose to us our motives and secrets of the heart. Hebrews 4:12 says: "The Word of God is living and powerful, and sharper than any two-edge sword, piercing even to the division of soul and spirit, and of joints and marrow, and is a discerner of the thoughts and intents of the heart."
The Word of God is like a mirror that reflects all our defects: "For if anyone is a hearer of the Word and not a doer, he is like a man observing his natural face in a mirror; for he observes himself, and immediately forgets what kind of man he was. But he who looks into the perfect law of liberty, and continues in it, and is not forgetful hearer, but a doer of the work, this one will blessed in what he does." (James 1:23-25).
As we look into the mirror of God' Word, a supernatural occurance
will take place: We will see the glory of God and will be transformed into that same image: "But we all, with unveiled face,
beholding as in a mirror the glory of the Lord, are being transformed into the same image from glory to glory, just as by the Spirit of the Lord (2 Corinthians 3:18).