Romans 12:1 I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service. 2 And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God.
Another way of stating these verses would be – “In light of all that God has done for you, you should respond by giving yourself back to Him to be used for His glory.”
Giving our lives to God involves several things: first of all, it involves giving to God our physical body; secondly, it involves giving to God our mind. Paul writes – “…be not conformed to this world: but be ye transformed by the renewing of your mind…”
The Bible says – “As a man thinketh in his heart – so is he.” (see Proverbs 23:7) Who we are and how we act is determined by the thoughts we think. The person who thinks godly thoughts will be a godly person, and the person who things ungodly thoughts will be an ungodly person.
Because the mind is so important, there is a great battle for its control. On the one hand, Satan does all he can to fill our minds with sin and negative thinking. God, on the other hand, strives to fill our minds with what is holy and righteous.
Paul tells us to not let the world conform us to its thinking. “Do not let the world squeeze you into its mold. Instead, seek to have your minds transformed by the power of God.” How does God transform our thinking? Jesus prayed – “Make them holy by Thy truth. Thy Word is truth.” (see John 17:17) God transforms our thinking by His Word.
The psalmist David understood the importance of being transformed by God’s Word.
Psalm 1:1 Blessed is the man that walketh not in the counsel of the ungodly, nor standeth in the way of sinners, nor sitteth in the seat of the scornful. 2 But his delight is in the law of the LORD; and in his law doth he meditate day and night.
Blessed are the people who do not allow their minds to be filled with what is sinful and wrong; but instead they fill their minds with the Word of God, thus allowing it to influence how they live.
Philippians 4:8 Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things.