Romans 12:2
Do not conform to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God's will is — good, pleasing and perfect. — Transformation (metamorphoō, metamorphosis, the exact word for transfiguration) comes through anakainōsis (renewal) of nous (mind, reasoning center). The pattern of this world (schēma tou aiōnos toutou, age's configuration) is being displaced by God's. Dokimasia (testing, proving, approving) of God's will becomes possible only through renewed mind. Thelēma (will) is good (kalos), pleasing (euarestos), and complete (teleios).