When a man and a woman marry a new life is created, they are still themselves and they each contribute 100% to their new unique life.
When a sperm and an egg merge they become one, each provides 100% to a new unique life.
When we confess with our mouth and believe in our heart that Jesus Christ is LORD and redeemer His Holy Spirit comes into our life and we each contribute 100% to our new unique life.
As a new creation in Christ Jesus I am united with all other believers as the Body of Christ, also called the Church. We each supply 100% to our new unique life as sons of GOD!
These are all life creating events in the natural* that have spiritual and eternal implications.
*Yes even being born again is a natural event. I was born an eternal being in a temporal body. The problem is that I was born with a sin nature and am not able to make myself righteous before GOD so that I would not face His judgment and receive eternal damnation. Salvation through Jesus Christ is the process that GOD uses to allow me to receive and make the changes in my life so that I will not stand before Him in judgment as a sinner but I will stand before Jesus in judgment as a redeemed son of GOD.
All of these events are a type of the marriage of the Lamb and His Bride! Jesus is the Lamb of GOD and the redeemed is His Bride. We are not individually His Bride, all believers, all redeemed are the Church and the whole Church is the Bride of Christ. After the marriage of the Lamb and His Bride we will be one unique life infinitely! As GOD is one unique live!