In John 3:5, Jesus said, "born of water and the Spirit" He did not say born of baptism and the Spirit. To automatically read baptism into this verse simply because it mentions "water" is unwarranted. Scripture interprets itself. Notice in John 7:38-39, "He who believes in Me, as the Scripture has said, out of his heart will flow rivers of LIVING WATER. But this He spoke concerning the SPIRIT.
*Did you see that? *The Holy Spirit is the source of living water and spiritual cleansing. If "water" is arbitrarily defined as baptism, then we could just as justifiably say, "Out of his heart will flow rivers of living baptism" in John 7:38. If this sounds ridiculous, it is no more so than the idea that water baptism is the source or the means of becoming born again.
In John 4:10, Jesus said, "If you knew the gift of God, and who it is who says to you, 'Give Me a drink,' you would have asked Him, and He would have given you living water." In John 4:14, Jesus said, "but whoever drinks of the water that I shall give him will never thirst. But the water that I shall give him will become in him a fountain of water springing up into everlasting life.
*Jesus connects this living water here with everlasting life. *Living water is not water baptism. In 1 Corinthians 12:13, we also read - ..drink into one Spirit. Notice how I properly harmonize scripture with scripture before reaching my conclusion. Water baptism is the picture or symbol of the new birth, but not the means of securing it.