Be not conformed to this world; do not fashion or accommodate yourselves to the corrupt principles, customs, or courses of worldly and wicked men; and what they are, you will find in Romans 13:13 Ephesians 4:18,19 1 Peter 4:3. You have somewhat the like counsel, Exodus 23:2 1 Peter 1:14. Be ye transformed by the renewing of your mind: q.d. Be you regenerated, and changed in your whole man; beginning at the mind, by which the Spirit of God worketh upon the inferior faculties of the soul: see Ephesians 4:23. That ye may prove what is that good, and acceptable, and perfect, will of God: by prove, understand discerning: by the will of God, his revealed will in his word; and so it best accords with the reasonable service, spoken of Romans 12:1, and with the scope of the text itself; which is, to exhort unto holiness and obedience, which is according to the rule of the word. He annexeth three adjuncts to the will or word of God: it is good; revealed only for our benefit. It is acceptable; i.e. by obedience thereunto we shall be accepted. It is perfect, and the observance thereof will make us so too, 2 Timothy 3:17. There are different readings of these words, but all to the same sense. Some thus, that you may prove the will of God, which to do, is good, acceptable, and perfect. Others thus, that you may prove what the will of God is, and what is good, acceptable, and perfect.
Related Commentaries of Romans 12:2
Romans 12:2
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.