Bad Tree, Bad Fruit
A good tree cannot bear bad fruit, and a bad tree cannot bear good fruit.
Matthew 7:18
That which is born of the flesh is flesh, and that which is born of the Spirit is spirit (John 3:6). The physical body and the physical soul are not evil creations. In the beginning, God created them, and He called them good (Genesis 1:31). Yet, fallen man is completely incapable of pleasing God on his own (Romans 3:11). It takes Faith to please God (Hebrews 11:6), and this is given (Romans 12:3).
The life of the Christian is marked by ‘baptisms’ (plural, see Hebrews 6:1). We are baptized (immersion, you go down into it) into Christ, and we are baptized (immersion, you come underneath it) into the Holy Spirit. This was depicted in the wilderness by the Israelites being baptized into the Red sea (water baptism) and the cloud (the Holy Spirit) (1 Corinthians 10:2).