I don't know what you mean when you talk about a financial interest in Baptism.  Baptisms are typically free.  Sometimes people give an offering but they are not required to do so.  

As for "Dogmatic" Jesus is pretty clear: "Unless a man be born of water and the Spirit he cannot enter the Kingdom of God."  (John 3:5) This is one of those verses that is unclear only to lawyers and Scripture scholars.