Passage
And be not conformed to this world: but be reformed in the newness of your mind, that you may prove what is the good and the acceptable and the perfect will of God.
Romans 12:2 (DRB)
Nearby Context
Romans 12:1 I beseech you therefore, brethren, by the mercy of God, that you present your bodies a living sacrifice, holy, pleasing unto God, your reasonable service.
Romans 12:2 And be not conformed to this world: but be reformed in the newness of your mind, that you may prove what is the good and the acceptable and the perfect will of God.
Romans 12:3 For I say, by the grace that is given me, to all that are among you, not to be more wise than it behoveth to be wise, but to be wise unto sobriety and according as God hath divided to every one the measure of faith.
Romans 12:4 For as in one body we have many members, but all the members have not the same office:
Study Lenses
The verse centers on "will of God", "world", "conformed", "reformed", "newness", "mind", "prove", and "good". It is saying that the verse draws attention to "will of God" and "world", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 1's "I beseech you therefore brethren by the..." into verse 3's "For I say by the grace that...", so "will of God" and "world" belong inside that flow. In Romans context, the local focus is righteousness by faith, union with Christ, life in the Spirit, and God's covenant faithfulness.
A plain takeaway is to answer the verse's own emphasis on "will of God" and "world" with trust shaped by these words, not by a vague optimism outside the passage.