The beautiful and symmetrical butterfly begins as an ugly but symmetrical caterpillar. However, its metamorphosis into something so incredibly different in appearance and mobility might cause one to not believe they are the same creature.
Likewise, the believer in Christ is said to go through a similar metamorphosis.
Therefore, brothers, by the mercies of God, I urge you to present your bodies as a living sacrifice, holy and pleasing to God; this is your spiritual worship. 2 Do not be conformed to this age, but be transformed by the renewing of your mind, so that you may discern what is the good, pleasing, and perfect will of God. (Romans 12:1-2, HCSB)*
The same word “transformed” is the word from which metamorphosis is derived. In the text it is a present imperative tense verb, thus a command that involves continuous action. As the Christian experiences transformation, it is not always an immediate, dramatic change, but a process that will find its completion in a thoroughly new creation, redeemed and reformed from the vestiges of a self-centered life to a God-directed life.
*Holman Christian Standard Bible (HCSB) Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers, Nashville Tennessee. All rights reserved.