Birth requires a seed: both naturally as well as spiritually in the creative process. We are created in the image of God, we are spirit.
When one is born again = spiritually born of the seed of God (1John 3:9). Naturally born in a physical body with a spirit that can potentially contain the Spirit of God while initially separated from God. Spirit of God indwells and seals you with the anointing and you can experience God and HIs revelation will be ignited within you through His Word (Bible) to walk out your life in wisdom and power!