Metamorphosis is what takes place when a caterpillar is transformed into a butterfly. We a slave of satan are transformed into a child of God. The question is how does this transformation takes place. Jesus answered, Amen, Amen, I say unto you, Except one be born of water and Spirit, he cannot enter into the Kingdom of God John 3:5. We are told to go into all the world making disciples, baptizing in the name of the Father, the Son and the Holy Spirit Matt 28:19. Peter on the day of Pentecost told the Jews to be saved they must repent and be baptized in the name of Jesus Acts 2:38. Why the importance of baptism? Baptism is a burial and resurrection, we are buried with Christ in the dipping into the death and raised up to walk around in newness of life Romans 6:3-4. Christ died for all, in Christ all died, Muslim, Hindu etc. all died in the second Adam, but not all are buried and resurrected. There is a book, "Slaves, Citizens, Sons." by Francis Lyall in which he looks at Roman law in the New Testament. There were 2 ways out of slavery, manumission whereby your owner set you free and became your patron and you were required to work for him one day a week. The other way was death, which completely set you free from your old owner. This is what occurs in baptism.