Romans 12:2 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.
English “world” emboldened in Romans 12:2 was translated from Greek noun 165 aion which is an earth age, in the context of Romans 12:2 it is this earth age. Greek adjective 166 aionios describes and qualifies multiple earth ages. If this is the first you have heard of biblical earth ages you may want to consider the possibility that your spiritual grammatical subject is someone other than God because Greek noun 165 aion and Greek adjective 166 aionios appear in the bible 199 times. English “world” in the New Testament has been translated from Greek noun 165 aion being an earth age, Greek noun 1093 ge being earth, Greek noun 2889 kosmos being the earth and it’s inhabitants, Greek verb 3195 mello being God’s prophetic plan for the future if God is your grammatical subject. Greek verb 3195 mello was translated into “the world to come”. English “world” in the New Testament was also translated from Greek noun 3625 oikoumene which encompasses the inhabitants of earthly kingdoms as found in Luke 2:1, Luke 4:5, Acts 11:28, Acts 17:6, Acts 19:27, Acts 24:5, Revelation 12:9 and Revelation 16:14. Greek noun 3625 oikoumene also encompasses the inhabitants of God’s kingdom, pursuant to God’s will and future process “That in the dispensation of the fulness of times he might gather together in one all things in Christ, both which are in heaven, and which are on earth; even in him”. Greek noun 3625 oikoumene applies to God’s kingdom of heaven in Matthew 24:14, Acts 17:31, Romans 10:18, Hebrews 1:6, Hebrews 2:5 and Revelation 3:10.
English “prove” emboldened in Romans 12:2 was translated from Greek verb 1381 dokimazo meaning to test in order to prove one’s fidelity to God. God’s full definition is contained in prior post World’s 4,351 Religions Are Persuaded Of Ludicrous Things. Matthew 6:6 and 1Timothy 2:3-4 are simple tests to prove your grammatical subject’s fidelity to God.