Romans 12:2

And be not conformed Neither in judgment, spirit, nor behaviour; to this vain and sinful world Which, neglecting the will of God, entirely follows its own; but be ye transformed Regenerated and created anew; by the renewing of your minds Of your understandings, wills, and affections, through the influence of the Spirit of God, Titus 3:5. Thus, Ephesians 4:22, the new man is described as renewed in the spirit of his mind; that is, in all his faculties; in his affections and will, as well as in his understanding: in consequence whereof his whole conduct becomes holy and virtuous. That ye may prove May be enabled to discern, approve, and know, not merely speculatively, but experimentally and practically, and by sure trial; what is the good, and acceptable, and perfect will of God The will of God is here to be understood of all the preceptive part of Christianity, which is in itself so excellently good, so acceptable to God, and so perfective of our nature: and it is here “set in opposition, on the one hand, to the idolatrous rites of worship practised by the heathen, which in their own nature were extremely bad; and, on the other, to the unprofitable ceremonies and sacrifices of the law of Moses, concerning which God himself declared that he had no pleasure in them, Hebrews 10:5. The rites of Moses, therefore, in which the Jews gloried, were no longer acceptable to God. Whereas the duties recommended by the apostle are of eternal obligation, and separate the people of God from the wicked in a more excellent manner than the Jews had been separated from idolaters by the rites of Moses.” Macknight.