For this cause the Lord, who gives us our life, gave us the covenant of baptism, containing a type of life and death, for the water fulfils the image of death, and the Spirit gives us the promise of life… Like a tomb, the water receives the body, symbolizing death; while the Spirit pours in the quickening power, renewing our souls from the deadness of sin into their original life. This then is what it is to be born again of water and of the Spirit, the water bringing the necessary death while the Spirit creates life within us.
–Saint Basil the Great (330-379)