The SON was transfigured on a mountain. But if I cast out devils by the Spirit of God , then the kingdom of God is come unto you. Now there are three that bear record on earth. So then they that are in the flesh cannot please God. Marvel not that I said unto thee, Ye must be born again.
Sinful flesh can only beget sinful flesh, as flesh can produce only after it's kind.
The Spirit of Jesus bears record in that Jesus was sinless. God created us to live in space and time and to see and understand things in a certain manner. Water is symbolic if cleanliness. Baptism by water is symbolic of cleanliness from the filth of sin. God always speaks in OUR language.